Elance Resources and Guide: Skills Test Answers

Skills Test Answers - PHP

In PHP, variables always start with which symbol?

Which of the following would be accepted as an argument parameter in the following function: function getEmotion(Emotion $emotion) { ... }

All of these

A class called Emotion

A class called Sad, which implements an Emotion interface

A class called Happy, which extends Emotion

"virtual()" in PHP

makes the final method overrideable again

is equivalent to the keyword "abstract"

marks the method as virtual, so it could be overridden

is an Apache-specific function

Which PHP function checks a month, day, and year number to determine if they form a valid Gregorian date?

check_date()

checkdate()

verify_date()

verifydate()

Which function exchanges all keys with their associated values in an array?

array_flip(array)

array_combine(array)

array_compare(array)

array_reverse(array)

Which PHP functions generate random numbers following algorithms known as Mersenne Twister?

mt() and smt()

mt_alg() and mt_salg()

rand() and srand()

mt_rand() and mt_srand()

What does the return code E_ERROR indicate?

Compile-time parse error

User-generated error message

Fatal run-time error

Run-time notice

Which of the following functions would allow you to convert a string to an array?

st2arr()

expand()

explode()

to_array()

implode()

Which variable name is incorrect?

$first

$1first

None of the above.

$_1FIRST

What is a collection of characters that is treated as one entity called?

Element

Parameters

Function

String

What is output to the screen when executing code: $> php -r 'echo echo "a";'

truea

PHP Parse error

How can we increase the execution time of a PHP script from setting php.ini?

By setting max_script_execution_time

By setting max_execution_time

By setting max_script_time

By setting script_execution_time

What type of statements tell your PHP script to execute a section of code only if certain criteria are met?

Class

Function

Exception

Conditional

What is the result of the following code? <?php $hello ="HELLO"; $hello=lcfirst($hello); echo $hello; ?>

hellO

None of these

hello

hELLO

HELLO

Which PHP math function would you use to return the number with the lowest value of two specified numbers?

ceil()

min()

bottom()

max()

PHP requires that instruction statements be terminated with a:

semicolon

underscore

curly brackets

period

Which of these does not represent a single, valid PHP variable

$myVar

$my-Var

$my_Var

$myvar

Which function tests a string for an exact match of the argument?

preg_match()

str()

test()

regex()

How do you inherit the methods from BaseClass in MyClass?

class MyClass parent BaseClass {

class MyClass includes BaseClass {

class MyClass extends BaseClass {

class MyClass inherits BaseClass {

class MyClass using BaseClass {

Which statement returns the number of characters in the string variable $a?

count($a)

strlen($a)

chr($a)

len($a)

sizeof($a)

Which of the following is a string operator?

plus(+)

minus(-)

decrement(--)

dot(.)

Which of the following variables does PHP make automatically available to you?

$_UPLOADED_FILES

$_DIR

$_SERVER

The concatenation operator in PHP is

Which PHP function do you call to begin a PHP session?

start_session();

open_session();

session_start();

session();

session_active();

Which of the following are examples of PHP comments?

/* */

None of these

All of these

How is the following statement interpreted in PHP? $i = 1;

$i is being compared to 1

$i is assigned a value of 1

None of these

$i is assigned a value of "one"

Which of the following are PHP comparison operators?

===

All of these

Which PHP math function would you use to generate a random integer?

int()

rand()

random()

next()

Which of the following HTML form submission methods is suitable when you need to send large amounts of form data?

Get

Post

Send

How do you define a constant in PHP?

defined("CONSTANT", "Hello world.");

define("CONSTANT", "Hello world.");

eval("CONSTANT", "Hello world.");

constant("CONSTANT", "Hello world.");

Which statement allows you to add new records to a MySQL database table?

All of these

PUT INTO

INSERT INTO

ADD INTO

Which of the following function libraries are supported in PHP?

All of these

JSON

MySQL

Which of the following variables is not a predefined variable?

$_REQUEST

$_GET

$_POST

$_ASK

How do you combine multiple arrays into one single PHP array?

array_pop()

array_merge()

array_compare()

array_shift()

Which of the following PHP language constructs allows you to combine code from one file into another?

require()

All of the these

include()

require_once()

Which PHP function sorts an array?

array_alpha()

combine()

array_walk()

sort()

Which variable is not predefined by PHP?

$_GET

$_FILES

$_POST

$_ASK

An example of a PHP string is:

"test"

In PHP, how would you determine if a variable is set?

isset()

unset()

combined()

isinit()

Variables in PHP start with a

dollar sign($)

underscore(_)

ampersand(&)

dot(.)

In PHP, functions using global variables must declare the variables by using

the STATIC keyword.

the LOCAL keyword.

the GLOBAL keyword.

Which variable is used to collect values of a form sent via the HTTP POST method?

$POST

_POST_

$_POST

POST

Choose the statement which produces this output: This is an example.

<?php echo "This is an example."; ?>

<? "This is an example."; ?>

<p="This is an example."; ?>

Which of the following is a valid PHP function modifier?

private

All of these

public

final

strpos() stands for

straight position.

strap OS.

string position.

string positive.

If the allow_url_fopen configuration setting is enabled, which of the following functions will be able to open remote urls?

All of these

require_once()

require()

include()

One way to output a string in PHP is:

output()

str()

display()

echo()

Which function checks for a specific PHP data type?

is_float()

All of these

is_int()

is_numeric()

What does MVC stand for?

Many Variable Classes

Maximum Visitor Connections

Model View Controller

Model Variable Container

How do you retrieve the value of a variable called "name" which has been passed from a submitted form?

Request.Form;

Request.QueryString;

$_GET["name"];

$_GetParameter[];

Which function will generate random integers?

rad2deg()

search()

rand()

find()

What types of arrays are supported in PHP?

Multi-dimensional

Associative

Numeric

All of these

What's the output? $name = 'John'; echo 'Hi there '.$name;

Hi there

Hi there John

Nothing. There is a syntax error

How do you write "Hello World" in PHP

"Hello World";

echo "Hello World";

document.print("Hello World");

out << "Hello World";

Which is a valid loop method in PHP?

For

All of these

While

PHP variables always begin with

a letter.

a dollar sign($).

underscore(_).

a number.

The PHP language can be used on the following operating systems:

Mac OS X

All of these

Windows NT

Linux

The function mysql_connect( ) takes following parameter(s):

server

username

All of these

password

What are int, float, string and boolean examples of in PHP?

integers

pointers

classes

data types

Which construct includes an external PHP file?

include

require

All of these

require_once

What is the correct way to create a function in PHP?

create myFunction(){ echo "Example function.\n";};

function myFunction(){ echo "Example function.\n";};

createFunction myFunction(){ echo "Example function.\n";};

new_function myFunction(){ echo "Example function.\n";};

What should you do in advance, to get and set session variable

session_start()

session_start_func()

sessionstart_func()

sessionstart()

_session_start()

The logical operator OR is similar to:

!==

Which PHP function completely destroys all data relevant to the session?

session_end();

session_destroy();

session_close();

destroy();

Which function would you use to check for data type?

is_int()

is_numeric()

is_float()

All of these

Which function creates a directory on the FTP server?

ftp_makekdir()

ftp_mkdirectory()

ftp_mkdir()

ftp_makedirectory()

Which is a characteristic of the PHP language?

scripting language

open source

All of these

embedded into HTML

CakePHP, Zend, and CodeIgniter are popular _________ used on many PHP servers.

unit testing packages

development frameworks

cacheing tools

image processing libraries

version control software

How do you add a multi-line comment in PHP?

/* This is a comment */

*\ This is a comment \*

<comment> This is a comment </comment>

All variables in PHP start with which symbol?

PHP supports which of the following features?

associative arrays

include files

All of these

mathematical functions

Placing ++ in front of variable:

creates a fatal error

will cause a syntax error

preincrements the variable by one

will print as a string

What PHP function calculates the sum of the values in an array?

array_pop()

array_math()

array_sum()

array_add()

Which operator is used to concatenate strings in PHP?

ampersand (&)

plus (+)

logical and (and)

dot (.)

Which function is used to perform a regular expression match in PHP?

match()

preg_match()

combine()

parse()

The statement header('Location: http://www.somesite.com'); will

displays the IP address of somesite.com.

redirects the browser to www.somesite.com.

creates a hyperlink.

displays the header of somesite.com.

Which PHP function opens a file for reading only?

open("c:\\test\\time.txt");

fopen("c:\\test\\time.txt" , "w");

fopenr("c:\\test\\time.txt" , "r");

fopen("c:\\test\\time.txt" , "r");

HTML form input needs to be validated in order to avoid:

SQL Injections.

hacking.

All of these

database intrusions.

What do you need to call in order for your session variables to work?

session_start()

session_begin()

$_SESSION_BEGIN

ob_start()

session()

A string literal in PHP can be specified in the following way(s):

'this is a string'

"this is a string"

All of these

<<<EOT this is a string EOT;

Which of the following variables is expected to contain information about the user's browser?

$_SERVER['HTTP_VARIANT']

$_SERVER['SERVER_NAME']

$_SERVER['PHP_SELF']

$_SERVER['HTTP_USER_AGENT'];

Which of the following returns information passed via HTTP forms?

$_GET

$_POST

All of these

$_REQUEST

Which PHP language construct sends output to a browser window?

return

echo

output

display

Which PHP function would you use to display the value of an array in a readable format?

display()

print()

print_r()

return()

An example of a float in PHP is:

All of these

7E-10

1.2E3

12.678

Which of the following checks if a value exists in an array?

exists_list

exists

PHP does not provide any inbuilt way of doing this.

in_array

In the following PHP script, $arr = array(1,2,3);, 1, 2, and 3 are the array

index

keys

subscript

values

What kind of error causes the termination of the script?

None of them

Fatal Errors

Notices

Warnings

Which PHP function finds the position of the last occurrence of a substring within a string?

pos()

strrpos()

split()

haystack()

$var = (10 % 2 == 0) ? true:false; What is the output of $var?

false

true

Include files must have the file extension ".inc"

True

False

To modify the default PHP settings such as whether to accept the short form open tag (<?), you need to change the

htaccess file.

php.inc file.

php.ini file.

machine.config file.

Which function gives you the current PHP version information?

phpversion()

version()

version_compare()

phpcredits()

Which PHP function returns part of a string?

ctrl alt delete

strpos()

All of these

substr()

Which function can be used to convert 'ff' to 255?

octdec()

bindec()

dechex()

hexdec()

The practice of combining strings and variables into one string is called:

joining

connecting

combination

concatenation

What is meant by nl2br()?

Inserts HTML line breaks (<BR />) before all newlines in a string.

Inserts HTML line breaks (<P />) before all newlines in a string.

Inserts HTML line breaks (<HR />) before all newlines in a string.

Inserts HTML line breaks (<NL/>) before all newlines in a string.

If a string is enclosed in double-quotes, PHP will interpret more escape sequences for special characters such as

All of these

Which of the following is NOT a command for sending output to the standard output?

send

printf

echo

Which of the following stores PHP values, such as strings, numbers or arrays?

variables

ID's

attributes

classes

Which PHP function would you use to display information about variables in a simple, readable format?

display()

infp()

dump()

var_dump()

mysqli_num_rows() function is used to:

Get all rows contain numbers.

Count number of columns in MySql Table.

Get all columns with numeric data.

Count number of characters in single row of MySql Query result.

Count number of rows in result of MySql Query.

Which statements start a session and end a session?

begin_session(); end_session();

session_start(); unset_session();

start_session(); session_explode();

session_start(); session_destroy();

start_session(); end_session();

What does the acronym LAMP stand for?

Linux And MySQL PHP

Linux Apache MySQL PHP (or Perl/Python)

Linux Apache Monitoring Program

Linux Application in MySQL PHP

How to call a method from within a class?

$this( my_function() );

public my_function();

$this.my_function();

$this->my_function();

private my_function();

Which construct is typically used for exception handling in PHP?

E_STRICT

try / catch

session();

modify()

In PHP, which statement is used to retrieve browser properties?

$_SERVER['PHP_SELF']

$_SERVER['SERVER_NAME']

$_SERVER['HTTP_USER_AGENT'];

$_SERVER['HTTP_HOST']

Which statement is true regarding the XML support in PHP?

XML validation is not provided

XML parsing is provided

All of these

the PHP XML extension implements xpath

How do you perform a strict comparison of variables for type and value?

$a === $b

$a = $b

$a == $b

None of these

Which function returns information on the PHP configuration you are using?

phpsearch();

phpconfig();

phpNotice();

phpAll();

phpinfo();

Which PHP function creates a directory on an FTP server?

ftp_mkdir()

ftp_create_dir()

ftp_chdir()

ftp_make_dir()

__construct is a

class for the object.

pseudo element for an object.

constructor for an object.

regex method for an object.

What is the right way to set a value on an object stdClass?

$variable.['value'] = 'value';

$variable['value'] = 'value';

$variable.value = 'value';

$variable->value = 'value';

$variable[value] = 'value';

Which of these assigns a value of type string to variable $x?

$x[] = "true";

$x = "true";

$x = true;

How do you specify a string literal in PHP?

'Hello there'

<<<EOD Hello there EOD;

"Hello there"

All of these

Which function allows you to split a string into an array of substrings by a string delimiter?

str(" ", $str)

explode(" ", $str)

None of these

split("", string)

Choose the correct value for $i. $i = 2; $i++;

Which control statement indicates a block of code to be repeated a number of times?

include

for

switch

Which function returns one or more randomly selected keys from an array?

array_rchunk()

array_rshuffle()

array_rand_pop()

array_diff_key()

array_rand()

What is the correct way to require the file "time.inc" in a manner which will halt the script upon failure?

<?php include_file("time.inc"); ?>

<?php require('time.inc'); ?>

<% include file="time.inc" %>

Which type is not supported by PHP?

boolean

string

array

time

integer

PHP requires instructions to be terminated at the end of each statement with a

;

</php>

}

Which PHP function randomizes the order of the elements in an array?

combine()

reverse()

mix()

shuffle()

Which statement correctly declares a float variable in PHP?

$a = 1.234;

$a = 7E-10;

$a = 4.5e3;

All of these

Which function allows you to specify a start position of a string and length arguments to retrieve part of a string?

str()

substr()

parse_str()

chunk_split()

True or False : list — Assign variables as if they were an array

Yes

Given, the following: <?php $business = array("retail", "advertising", "computer"); echo current($business)."\n"; echo next($business)."\n"; echo $business[2]."\n"; ?> What is the output?

retail retail computer

retail computer computer

retail advertising computer

retail retail retail

The FTP functions can be used to perform the following actions on file servers:

Open a connection

All of these

None of these.

Upload files

Which of the following is NOT used to specify PHP comments?

/* */

What is the output of flowing code? <?php $cars=array("Volvo","BMW","Toyota"); sort($cars); $clength=count($cars); for($x=0;$x<$clength;$x++) { echo $cars[$x]; echo " "; } ?>

Volvo Toyota BMW

BMW Toyota Volvo

Volvo BMW Toyota

Which variable contains values of $_GET, $_POST, and $_COOKIE?

$_REQUEST

$_INCLUDE

$_MERGE

$_ALL

Can PHP be run on a Windows IIS server?

true

false

Only if installed on a separate partition.

Select the type of variable scope which is not supported by PHP:

Global variables

Hidden variables

Local variables

Function parameters

Which of the following is the recommended standard (short_opentag=Off) for opening and closing a PHP code block?

'<!php' to open and '!>' to close

'<%php' to open and '%>' to close

'</=' to open and '/>' to close

'<?' to open and '?>' to close

'<?php' to open and '?>' to close

An array in PHP is:

a data file.

a series of variables.

None of these

a collection of key value pairs.

What type of operator is && in PHP?

assignment operator

comparison operator

logical operator

arithmetic operator

The setcookie() function must appear _____ the <html> tag.

after

before

Can PHP scripts be embedded directly into XHTML documents?

Yes

Depends on the Operating System

What is the result of the following code? <?php $test =array("five", "six", 3, 4); $hold= count($test); echo $test; ?>

Array

True or false? We can include ("sandy.php") two times in one PHP page "my.php".

False

True

Which PHP math function would you use to round a number upwards to the nearest integer?

max()

up()

ceil()

top()

In PHP in order to access MySQL database, use the:

sql_connect() function

mysql-connect() function

mysqlconnect() function

mysqli_connect() function

Which is an example of a statement using a combined operator?

$a--

$a != $b

$a == $b

$a++

$a += $b

Which of the following is the correct way to add comments to PHP?

All listed methods are valid

/* Comment code here */

# Comment code here

// Comment code here

Which following function is used to count total number of characters in a string?

strlen();

total_chars();

num_chars();

count();

str_count();

What function is used to check if a variable is an array?

in_array()

array()

array_check()

array_exists()

is_array()

Which statement is true about PHP constants?

All of these.

They cannot contain an array.

They cannot be changed.

They are case-sensitive by default.

What will it output? <?php $var = "pontus, patrik, felix"; $var = explode(", ", $var); echo count($var); ?>

A error message.

To output information about a variable use the function

print_var()

output()

var_dump()

display_var()

When using the POST method, variables are displayed in the URL:

True

Only when posted by a form

False

Only when posted with AJAX

What is the output? <?php $boolean= true; while ($boolean) { $boolean =false; echo "false"; }

syntax error

falsefalse

false

true

None of the these

What will be the result of this code: <?php $text1 = "Test"; $text2 = "Test"; if($text1 == md5($text2)) { echo "Yes"; } else { echo "No"; }

Yes

PHP ERROR

If you would like to check to see if a PHP variable has data, which of the following language constructs would you use?

null().

data().

none().

empty().

Variables in PHP are represented by a dollar sign followed by the name of the variable. A valid name must NEVER start with a...

underscore.

Any of these.

number.

letter.

Which of the following displays the browser properties using PHP?

$_SERVER['HTTP_USER_AGENT']

$_SERVER['HTTP_AGENT']

$_SERVER['BROWSER_DETAIL']

$_SERVER['BROWSER_NAME']

What does the following PHP statement create? define("FIRST-NAME","John");

special characters

a variable

a definition

a constant

The PHP operator, %, which returns the remainder of an equation is called the:

floating integer

remainder

modulus

pre-increment

Which keyword causes a conditional loop to skip to the start of the next iteration?

begin

continue

return

end

What PHP function counts elements in an array, or properties in an object?

count()

add()

digits()

array_count()

Which of the following is valid PHP syntax?

None of these

if($a == 5) echo "a = 5";

if($a == 5) then echo "a = 5"; endif

if($a == 5) echo "a = 5"; endif

In PHP, you can use both single quotes ( ' ' ) and double quotes ( " " ) for strings.

False

True, but double quotes will expand PHP variables and escape sequences inside it.

True, they are the same thing.

What is a large binary data object called in PHP?

lib

blurb

bin

blob

What operator is used to test if two values are identical in every way

!==

instanceof

===

To suppress error messages to the user, preface the PHP statement with

What are the default header request protocols defined in PHP?

HTML

XML

XHTML

application

All of these

What is the output from this example? $str = "My name is O\'Connor."; echo stripslashes($str);

My name is O\'Connor.

None of these

My name is OConnor.

My name is O'Connor.

Which function converts a string to all uppercase characters?

upper()

ucase()

uppercase()

strtoupper()

Which of the following statement best describes: $panther = new Animal();

Invocation of a function

Declaration of a string

Constructor

Access modifier

Instantiation of a class

Which PHP extension provides an abstract method for database retrieval?

POP

PDO

STMP

TRC

A fatal run-time error would be caught by

ERROR

E_NOTICE

E_ERROR

E_WARNING

Include files can have which file extensions?

.php

.txt

Any of these

.inc

What function converts 'Hatfields & McCoys' into 'Hatfields & McCoys'?

htmlentities()

convert()

transform()

ampersand()

Which of the following is NOT a function of PHP session support?

session_pw

session_decode

session_id

session_destroy

Which function removes all HTML and PHP tags?

remove_html_php()

tag_remove()

strip_tags()

remove_tags()

Which of the following language constructs is used to terminate a running script?

eval()

kill()

exit()

break()

halt()

Choose the correct output. <?php $data = "98.8degrees"; $data = (double)$data; echo $data; ?>

98.8degrees

degrees

98.8

True or False? Arrays in PHP can only hold the same data type.

False

True

What is the value of $var when the following line is executed in a PHP function? unset($var);

" "

NULL

Neither of these.

Which statement would produce the output, "I love summer"?

All of these

<?php print ("I love summer"); ?>

<?php $message="I love summer"; echo $message; ?>

<?php $season="summer"; echo "I love $season" ; ?>

<?="I love summer"?>

Which function allows you to delete a file?

clearfile

remove

unlink

delete

Which function checks for the existence of a particular key?

isset()

for_each()

element()

array_key_exists()

Which PHP function will combine two arrays?

array_push()

array_merge()

array_combine()

array_sum()

Which PHP function returns an array with elements in reverse order?

array_descend()

array_reverse()

None of these

reverse()

Which of the following is false?

PHP applications must be compiled.

PHP code is embedded into HTML source code.

PHP can be used to develop web applications.

PHP can be deployed on most web servers.

In the date() function what does the 'm' format character do?

Insert month as Jan through Dec

Insert month as 01 through 12

Insert minute as 0 through 59

Insert minute as 00 through 59

Which PHP function creates an array by using one array for keys and another for its values?

array2()

$array()

combine()

array_combine()

Which of the following functions changes directory on ftp-connection?

ftp_chmod()

ftp_login()

ftp_mkdir()

ftp_connect()

ftp_chdir()

In this example code, $result = print_r($a); $a is the

property

function

argument

element

Which function sets the internal pointer of an array back to its first element?

loop()

reset()

current()

next()

The comparison $a <> $b means

$a is less than $b

$a is equal to $b

$a is greater than or less than $b

$a is not equal to $b

Which datatypes are treated as arrays?

float

integer

strings

double

In PHP the error control operator is _______

HTTP cookies can be used to:

check for SQL injections.

create client side scripts.

identify a user.

validate input fields.

What does the following output? echo (5 % 3);

None of these

What is the GD Library?

it's add a dozen of special new $_GLOBAL variables that gives principally informations on the user (localization, common social media cookies, etc...) - (Global iDentification)

It is a library that gives the PHP the capability to create and manipulate image files. - (Gif Draw)

It is a library that gives the PHP the capability to access and create virtual domains. - (Generated Domain)

Which function displays a formatted string?

printf()

dump()

print()

echo

Which of the following outputs a formatted string?

print("Hello %s", $name);

echo("Hello %s", $name);

printf("Hello %s", $name);

output("Hello %s", $name);

What function can be used to help prevent MySQL injection?

mysql_escape()

mysqlescapethisstring()

mysql_real_escape_string()

escape_mysql_string()

None of the above

OCI8, PostgreSQL, and SQLSRV are all examples of

All of these

database extensions available in PHP.

queries available in PHP.

form extensions available in PHP

Which function advances the internal array pointer of an array?

skip()

next()

move()

current()

What is the scope of a PHP constant?

global

variable

local

None of these

What does this function do: function my_func($variable) { return (is_numeric($variable) && $variable % 2 == 0); }

Tests whether $variable is an even number

Tests whether $variable ends in 2

Tests whether $variable is a number and contains 2

Tests whether $variable is a number and ends in 2

The only code construct allowed before a namespace declaration is the declare statement, for defining encoding of a source file

false

true

True or False: There is no difference in using the following 2 examples: echo('string'); echo 'string';

True

False

It depends on the server environment

Choose the output of the following code. Assume that today is 2009-3-19:2:45:32 pm <?php $today = date("F j, Y"); ?>

March 19, 2009

Mar 19, 09

03 19, 2009

Mar 19, 2009

Which rule determines which sections of script are able to access which variables?

Parameters

Variable Scope

Functions

Arrays

What is the difference between the include() and require() language constructs?

They handle failure differently.

There is no difference.

They handle file paths differently.

None of these.

The PHP mail() function allows you to...

send mail messages directly from a script.

send a mail message according to the IMAP protocol directly from a script.

send a mail message according to the POP3 protocol directy from a script.

None of these

Is $_SERVER['PHP_SELF'] subject to injection vulnerabilities?

No, it's safe. It can only contain paths and filenames specified by the web master.

Yes, it's vulnerable. On most servers PATH_INFO is supported, which is part of PHP_SELF

Which PHP function can be used to generate a unique ID for members of your site?

mt_random()

php_create_user()

uniqid()

unpack()

What function converts newlines to HTML line breaks in a string?

nl2br()

insert_br()

line_break()

html_line_break()

newlines()

What is meaning of PEAR?

PHP Extension and Application Register

PHP Extension and Application Repository

PHP Execution and Application Repository

How do I typecast a variable to boolean?

Both are valid statements.

$var = ($var == $var);

It's not possible to typecast variables like this.

$var = (bool)$var;

Which PHP string function is used to convert the first letter of a string to uppercase?

strtoupper()

strUpperCase()

ucfirst()

strUpperFirst()

Which type of array allows you to use textual keys so that array indices can be more descriptive?

Associative

All of these

Textual

Key

How do you create a non-public method, which can be used in a child-class?

nonpublic function Something() {

private function Something() {

protected function Something() {

parent function Something() {

preserved function Something() {

The case expression is used as part of a PHP ____.

switch statement.

try / catch condition.

All of these

if statement.

Which of the following is the scope resolution operator in PHP?

All of these

Choose the word(s) that describe the fundamental style of programming for PHP.

procedural

object-oriented

imperative

All of these

You can call a parent class' implementation of a method which is overridden by a child class using:

parent::

This is not possible

$this->

self::

above::

What will be the result of the following: echo ucwords(strtoupper('aAaA bBbB'));

aAAA bBBB

aAaA bBbB

Aaaa Bbbb

aaaa bbbb

AAAA BBBB

Choose the output of the following script. <?php $rest = substr("abcdef", -1); echo $rest; ?>

Which function returns the contents of the output buffer and empties the buffer?

ob_get_clean();

ob_return_clean();

ob_own_clean();

ob_ret_clean();

What is output by the following: $c = 1; ++$c; echo $c++;

Choose the variable assignment which is performed 'by value' in PHP.

$value1= %$value

$value1= &$value

None of these

$value1= $value

Which PHP function sorts an array and maintains index association?

array_alpha()

sort()

awalk()

asort()

Which PHP function returns "true" if a value already exists in an array?

in_array()

array_search()

is_array()

array_found()

array_key_exists()

What is returned by array_product( array( 2, 3) )?

array( array( 2 ) )

array( 2 )

How would you create a numeric array from the following string that did not include "-test" and where each digit had its own array key? $str = '6.1.4.2.6-test';

$arr = implode('-', $str); $arr = implode('.', $arr[0]);

$arr = str_replace('-', '', $str);

You can't

$arr = explode('-', $str); $arr = explode('.', $arr[0]);

The interpreter executes one PHP command which ends in a semi-colon. This is referred to as a

All of these

PHP array.

PHP statement.

PHP function.

Which PHP function checks to see if a file exists and is writable?

is_writable()

write()

if_exists()

isset()

The web server sets a cookie on the web client by sending the name/value pair as part of

java protocol.

an HTTP header.

a session.

a database object.

Which PHP function sends a raw HTTP header to a client?

raw()

$_REQUEST

$_HTTP

header()

$val = ""; What will isset($val) return?

false

true

echo substr("Hello world",-4); the right output is?

orld

hell

world

hello

What is the default execution time for a PHP script?

60 secs

30 secs

20 secs

10 secs

After a file is successfully opened in PHP, how do you retrieve a line from the file?

!feof

line_number

fpointer

fgets

What will range('a', 'z') return?

This function call will throw an exception

An alphabetically ordered array of letters from 'a' to 'z'

Distance between letters 'a' and 'z' on an alphabetically ordered list

False

Which of the following is not a valid key type for arrays in PHP?

strings

integers

All of these

objects

natsort( array( "i10", "i1", "i20" ) ) = ?

array( "i20", "i10", "i1" )

array( "i10", "i1", "i20" )

array( "i1", "i10", "i20" )

array( "i10", "i20", "i1" )

false

What separates a sequence of one or more characters used to specify the boundary between separate text regions?

separater

delimiter

extended value

parser

What is the value of $start after exiting the for loop? <?php $start=5; for ($i=0; $i !=1; $i++) { $start= $start - 2; } ?>

The following code will produce: var_dump(5 === "5");

bool(true)

string(1) "5"

bool(false)

int(5)

What variable scope would you use if you wanted a function variable which does not discard it's value when the function has completed execution?

None of these

local

function parameter

static

The break statement ends execution of which of the following structures?

switch

while

All of these

for

Which PHP function tells whether a file exists and is readable?

if_exists()

isset()

is_readable()

read()

Choose the string for which the POSIX regular expression ^[A-Za-z]$ matches.

function foo($bar) { if($bar['soap'] != 'Zest') { return $bar['soap']; } } Which best describes the function foo()?

It is an anonymous function

It will return an error

It is syntactically incorrect

It opens an infinite loop

The parameter(s) passed to it is/are an associative array

What is default session time in PHP ?

3036 Seconds

1436 Seconds

2000 Seconds

1440 Seconds

In this example code, $result = print_r ($a); $result is the

argument.

variable.

expression.

property.

Given the following code, the Atom class can access which variables? class Flash { public $fast; private $superSpeed; private $ultraSonic; protected $warp; } class Atom extends Flash { }

$superSpeed, $ultraSonic

$fast, $superSpeed, $ultraSonic, $warp

$fast, $warp

$fast, $superSpeed, $ultraSonic

$fast

Which PHP function or variable will return the value of current session id?

$_SESSION['ID']

session_id()

$_SESSION['CURRENT_ID']

curr_session_id()

What's the MIME type for images with correct extension "jpg"?

mime/.jpg

jpg

image/jpeg

mime/jpg

image/jpg

How would you delete a cookie?

use session_destroy()

use cookie_destroy()

do not set an expiration

eat it warmed with milk

set the expiration date in the past

What will be displayed? <?php $var = "6"; var_dump($var); $var++; var_dump($var); ?>

string(1) "6"

string(1) "6" int(7)

string(1) int(7)

int(7)

Which PHP function removes the last value of an array and returns it?

array_pop()

array_last()

array_unshift()

array_shift()

Which of the following string delimiting methods is known as the heredoc syntax?

delimited by single quote

delimited by <<< identifier

delimited by double quote

All of above

Self-contained collections of functions AND properties are referred to as

objects.

elements.

references.

collections.

Given the statement, mysqli_connect(“happy.com”, “hot24”, “015A#”, “ABC”); “happy.com” and “hot24” respectively refer to ?

Host, database

Password, username

Database, host

Server, client

Host, username

Error reporting constants are used to adjust error reporting settings. Which of the following is NOT a valid error reporting constant?

E_CONSTANT

E_NOTICE

E_STRICT

E_WARNING

E_ALL

What is the result of the following code: $array[]="value";

adds new element to the array with null as a key

is illegal, will throw an fatal error

adds new element at the end of the array

creates new array of chars from the given string

Which compound type is supported by PHP?

boolean

array

integer

float

In PHP, the die() and exit() language constructs perform the same function.

True

False: They produce different return codes

False: They are actually MySQL functions

False: They are not part of the PHP language

To access functions of an instantiated class, you use the following:

class::function

class.function()

class->function()

$class::function()

$class->function()

What is one of the difference between the use of single quotes and double quotes in PHP syntax?

variables names will not be expanded in double quotes

double quoted strings cannot contain line breaks

variable names will be expanded in double quotes

single quoted strings cannot contain line breaks

<?php $array1= array(“fast”, "faster”); $array1[0] = “faster”; if ($array1[1] == “faster”) { $array1[1]= “fastest”; } foreach($array1 as $output) { echo $output . " "; } ?>

fastest faster

faster fastest

faster faster

none of these

fastest fastest

Which one removes a cookie from client's browser?

setcookie('mycookie', '', time()-3600);

removecookie('mycookie', 0, time()-3600);

deletecookie($_COOKIE['mycookie']);

unsetcookie('mycookie', 0, 1);

The PHP instruction header("Content-Type: text/plain") should be sent:

after the page is loaded.

inside of a function.

in the HTML header.

before any output is sent

What do anonymous functions do in PHP?

None of these

provide functions which run at the end of a script's execution

allow the creation of functions with no name

allow the creation of global functions

Which PHP function closes an open SQLite database?

close();

sqlite_close($dbhandle);

SQLite3Stmt::close();

All of these

Which function sorts an array in descending order?

ksort()

rsort()

usort()

sort()

Which type of control structure should NOT be used to check for a condition being met?

switch

try / catch

None of these

if /else

The PHP statement: $i[2] = "orange"; is an example of

a numeric array.

None of these

an associative array.

a distributive array.

Which of the following is not a valid PHP variable declaration?

$_10

$10_var

${“MyVar”}

$aVaR

Upon completion of a file upload in PHP, the UPLOAD_ERR_OK error code is returned. What does this indicate?

The file uploaded with success.

The uploaded file was only partially uploaded.

Failed to write file to disk.

No file was uploaded.

Which statement will NOT combine strings $s1 and $s2 into a single string?

$s1 + $s2

implode(' ',array($s1,$s2))

$s1.$s2

"{$s1} {$s2}"

Which is a valid character for starting a PHP function name?

dollar sign($)

All of these

percent(%)

underscore(_)

Which of the following functions allows you to split a string by a regular expression and put the results into an array?

preg_split()

explode()

implode()

join()

dirname(FILE) will return what?

the current directory

The relative location of the server root

the same thing as $_SERVER['DOCUMENT_ROOT']

The URL of the file it's placed in

The directory in which the currently invoked file is located

Which libraries are available for using regular expressions in PHP?

Neither of these.

Perl-Compatible (PCRE)

POSIX Regex

Both of these.

What is the result of casting the integer 1 to an array: (array) 1

An associative array with a key of 1 and a value of 1

A numerically indexed array with one element who's value is 1

Casting an integer to an array has no effect

An associative array with a key of 1 and a value of NULL

Variable $a has not been declared. With error reporting turned off, what is the result of: $a[1][2]=3;?

Syntax error

A multi-level array structure is created with 3 as a value.

Error: Undeclared variable $a

Error: Uninitialized array $a[1]

What is default session time in PHP?

900 seconds or 15 minutes.

1800 seconds or 30 minutes.

infinity

3600 seconds or 60 minutes.

1440 seconds or 24 minutes.

What is input sanitization?

Converting input into a format that PHP supports.

All of these

The automatic process that creates the $_GET, and $_POST superglobals.

Removing or cleaning potentially malicious user input.

How can we set the default time zone using PHP?

default_timezone(timezone_identifier);

timezone_set(timezone_identifier);

date_default_timezone_set(timezone_identifier);

What function creates a cookie?

setcookie()

cookie()

establishcookie()

set_cookie()

create_cookie()

Which PHP function checks to see if HTTP headers have been sent?

header()

http_response_code()

headers_sent()

sent()

What will be the value of $result? <?php $myArr = array( 'val1' => 1, 'val2' => array('val21' => 21, 'val22' => 22), 'val3' => 3 ); $result = array_key_exists('val22', $myArr); ?>

an error

false

" "

true

Which methods are available in PHP to read a remote file?

curl_exec()

file_get_contents()

fopen()

All of these

What function can you use to create your own streams using the PHP stream wrappers and register them within PHP?

wrapper_register

stream_wrapper_register

stream_wrapper_reg

Which character is used to separate namespaces in PHP?

Arrow(->)

Backslash (\)

Double colon (::)

Period(.)

The function checkdate() returns what data type?

Timestamp

String

Boolean

Integer

Date

How to capture exception message of a try / catch? Note: consider Exception $e

$e->getMessage();

$e->error();

$e->getException();

$e->getExceptions();

$e->getErrors();

The following code does what? <?php $textfile = "my_file.txt"; $file = fopen("$textfile", 'r+'); ?>

opens the file, "my_file.txt" for reading only

reads the entire file, "my_file.txt" into an array

opens the file, “my_file.txt” for reading and writing

$table = array("old_value"); foreach($table as $row) { $row="new_value"; } echo $table[0]; will produce:

"old_value"

Fatal error, as the variable used in foreach is read-only

"new_value"

What function sets the default timezone used by all date and time functions in a script?

date_default_set('Region');

date_set('Region');

default_timezone_set('Region');

timezone_set('Region');

date_default_timezone_set('Region');

Choose the correct output for: $x=array(2=>"mouse",7=>"keyboard"); $y=array_keys($x); echo $y[1];

mouse

keyboard

How can you call this function? $greet = function($name) { printf("Hello %s\r\n", $name); };

$greet $World;

$greet('World');

PHP does not support this syntax.

$_SERVER, $_COOKIE, $_FILES, $_ENV are examples of PHP built-in variables called:

superglobals

$_GLOBALS

global functions

global arrays

print_r( 2 ) outputs:

int(2)

Throws an exception

Nothing, but returns false

Array { [0] => 2 }

In PHP5, your "construct" method must be named the exact same thing as your "class".

False

Only on Nginx

Only on Lighttpd

When your class extends a parent class

True

What is the way to use the magic method 'toString()' of this Class ? class exampleClass { protected $a= 1; protected $b= 2; function toString() { return 'a= '. $this->a . ',b= '. $this->b; } }

All of the these.

$c = new exampleClass(); $c->__toString();

$c = new exampleClass(); (string) $c;

$c = new exampleClass(); strval($c);

The comparison $a xor $b evaluates to...

TRUE if either $a or $b is FALSE

FALSE if either $a or $b is TRUE, but not both.

TRUE if either $a or $b is TRUE, but not both.

TRUE if either $a or $b is TRUE

Which of the following functions is used to format a number ?

num_format();

format_number();

format_num();

number_format();

format($number,$format_style);

To determine if the file pointer is at the end of a successfully opened file, use the...

$file_end variable.

feof() function.

eof() function.

$end variable.

Which of the following will return TRUE?

is_null(3.14)

is_numeric(M_PI)

is_string(M_PI)

is_numeric("three point one four")

Which of the following functions can be used to execute a shell command?

passthru();

exec();

system();

All of these

If one wants to convert all double quotes (") to a backslash followed by a double quote (\") which of the following can be used?

addslashes()

htmlspecialchars()

escape_quotes()

addbackslash()

None of these

Which PHP function will return an array of values from $start to $end.

array_list( $start, $end);

range( $start, $end);

list( $start, $end);

numbers( $start, $end);

The PHP function which capitalizes the first letter of each word in a string

ucfirst()

strtoupper()

caps()

ucwords()

PHP scripts can be saved, and included later, under which allowed file extensions?

.php ONLY

.inc, .common and .php

Any File Extension

.inc and .php

The function setcookie( ) is used to

All of these.

enable or disable cookie support.

create, update, or delete a cookie header in the HTTP response

send a cookie without url-encoding the cookie value.

When using php cli how can you return the same info as phpinfo()

php -c 'phpinfo();'

php -i

php -a

php -I

What is the correct way to assign a class constant?

constant MY_CONSTANT = 'value';

private MY_CONST = 'value';

const MY_CONSTANT = 'value';

const $myConstant = 'value';

Which of these is correct usage of the chmod() function?

chmod('/path/to/file', 755);

chmod('/path/to/file', 0755);

chmod('/path/to/file', '-rwxr-xr-x');

chmod('/path/to/file', 0x755);

Which of the following is true about the "touch" function in PHP? Signature: touch($filename, $time) : boolean

$time is a required parameter of this function.

If the file does not exist, it will be created.

Modification timestamp is not modified, only access time (in the filesystem)

What is the recommendation regarding PHP closing tags in a document?

There is no recommendation.

Omit the closing tag when the file contains only PHP code.

Only use the closing tag when short tags are enabled.

End all PHP files with '?>'.

Which of the following functions does not have a resource for a return type?

None of these

strrpos()

mysql_connect()

fopen()

What is PHAR?

The PHP official application and extensions repository ("PHP Application Repository")

The PHP way to distribute entire applications within a single file ("PHP Archive")

The PHP official reference on advanced topics ("PHP Advanced Reference")

What is the primary difference between interfaces and abstract classes in PHP?

Abstract classes cannot have function implementations.

Multiple Inheritance is available for an Abstract class.

Interfaces can contain variables,

Interfaces cannot have function implementations.

Which function removes the first element from an array, and returns the value of the removed element?

array_flip()

array_pop()

array_shift()

array_compare()

what is array_column?

Return the values from a single column in the input array

Return the key from a single column in the input array

Return the values from a multi column in the input array

get the values from a single column in the input obj

How do you get the number of arguments passed to a PHP function?

count() function

None of these

$argc variable

$argv variable

Which PHP function is used to replace a string?

str_replace()

substr_replace()

str_ireplace()

All of these

PHP variable $hello is set to “HELLO WORLD". Which statement would return "Hello World" instead?

echo ucwords($hello);

echo ucfirst($hello);

echo ucwords(strtolower($hello));

echo ucfirst(strtolower($hello));

What is the default timeout of a PHP session cookie ?

15 minutes

Never

Until the browser is closed

Depends on the client browser

30 minutes

class A{} class_alias( 'A', 'B' ); var_dump(new B); outputs ...

NULL

bool(false)

object(A)#1 (0) { }

object(B)#1 (0) { }

What does the following PHP code do? preg_filter($pattern, $replace, $subject)

Performs a regular expression search and replace

None of these

Performs a regular expression search and replace using a callback

Returns array entries that match the pattern

Which function can be used to simplify searches in databases where you know the pronunciation but not the spelling

explode

strtolower

soundex

parse_str

preg_search

What is the output of the following code? $one='two'; $two='one'; echo $$$one;

does not output anything

generates an error

onetwo

two

one

PHP's echo and print functions are not exactly alike. Which will accept multiple parameters and concatenate them in its "without parentheses" form?

neither echo nor print

echo

both echo and print

Which of the following statements is NOT true for PHP constants?

Their value cannot change for the duration of the script.

They are case sensitive.

The scope of a constant is local.

A valid constant name starts with a letter or an underscore.

Which of those is not magic method?

__toString

__sleep

__clone

__toInt

__callStatic

How do single quotes interpret strings in PHP?

None of these

literally

literally except for variables which are expanded

escape sequences are interpreted

When passing an object to json_encode(), the default behavior can be modified by:

Defining the __toJson() function.

Implementing the JsonSerializable interface.

It's not possible to change the default behavior.

Defining the __toArray() function.

Which statement opens a file for writing, to append data at the end of its content ?

fopen("myFile", "w")

fopen("myFile", "wa")

fopen("myFile", "r+")

fopen("myFile", "a")

what will be the output: $array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red"); $array2 = array("a" => "green", "yellow", "red"); $result = array_diff_assoc($array1, $array2); print_r($result);

Array ( [b] => brown [c] => blue [0] => red )

Array ( [c] => brown [b] => blue [0] => red )

Array ( [b] => brown [c] => blue [d] => red )

Array ( [b] => brown [c] => blue [a] => red )

What will the following code output: array_map("print_r", array( 'a', 'b' ) );

Nothing

Array{ [0] => 'a', [1] => 'b' }

What does the use of the final keyword in a method declaration prevent?

All of these

Specific properties within a class from being modified.

Child classes from overriding the method.

Objects from being modified.

$a = array('a' => 0, 'b' => 0, 'c' => 1, 'd' => 2); $b = array_flip($a); var_dump($b); What does the 'var_dump' function show ?

array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" }

array(4) { 'd' => int 2 'c' => int 1 'b' => int 0 'a' => int 0}

array(3) { [0]=> string(1) "b" [1]=> string(1) "c" [2]=> string(1) "d" }

What does the glob() function return?

All system global variables

An array of all global variables into the user defined function

An array of filenames / directories matching a specified pattern

Given an array of images, $images = array("img12.png", "img10.png", "img2.png", "img1.png"), which function will sort $images into ("img1.png", "img2.png", "img10.png", "img12.png")?

arsort($images);

natsort($images);

usort($images);

ksort($images);

asort($images);

Which PHP function would you use to get information about the current session cookie?

session_set_cookie_params()

set_cookie()

get_cookie()

session_get_cookie_params()

What is the correct way to call an anonymous function?

callback($functionName, $var);

call_function($var);

$func($var);

anonymous($var);

Choose the correct output of: <?php $email = 'admin@domain.tld'; echo strstr($email, '@'); ?>

admin@domain.tld

@domain.tld

domain.tld

admin

Which mode parameter should be used with the fopen() function to open a file and point to the end for writing only?

What is the result of calling json_encode() on an empty array?

[] - An empty JavaScript array

{} - An empty JavaScript object

undefined

'' - An empty JavaScript string

Which type of error can NOT be caught with a custom error handler?

E_USER_ERROR

E_RECOVERABLE_ERROR

E_WARNING

E_NOTICE

E_ERROR

Which of the following code snippets will split a string into an array with 3 elements?

$array = str_split("a b c", 2);

All of them

$array = split(" ", "a b c");

$array = explode(" ", "a b c");

$array = sscanf("a b c", "%s %s %s");

What will be the output for the following code? $values = array(0, NULL, FALSE); foreach($values as $key => $value) { echo isset($values[$key]) ? "TRUE " : "FALSE "; }

TRUE FALSE FALSE

TRUE FALSE TRUE

fatal error when using isset on an array

TRUE TRUE TRUE

FALSE FALSE FALSE

What are Traits in PHP?

Traits allow multiple inheritance for classes.

Traits allow code reuse without direct inheritance.

Traits are class interfaces.

Traits are all of these things.

is_a( $a, $b ) will:

it is not a built-in php function

check if $a is of class "$b" or has this class as one of its parents

Check if $a is of type "$b"

Which PHP function will return a file's last access time?

fileaccesstime()

file_access_time()

filectime()

fileatime()

What is the value of $a in the following: <?php $a = array_pad( array( 0 ), 2, 1 ); ?>

array( 0, 2 )

array( 2 )

array( 0, 1 )

NULL

Sleep(3000); will sleep the page for?

300 seconds

3000 seconds

30 seconds

3 seconds

What is the output of the following code? <?php echo str_pad("abc", 6, "7"); ?>

abc777

abcde67

abcde6666666

abcde777777

777abc

use keyword is used only for namespace

false

true

What is the result of the following code : <?php echo (strpos('abcdef', 'a')) ? : -1; ?>

true

Syntax error

-1

What is the result of the following code ? <?php $a = 1; echo $a++; $a *= 2; echo ++$a; ?>

What will be the final structure of the following array? $animals = array( 'dog', 'cat', true => 'lion' );

array( 0 => 'dog', 1 => 'cat', true => 'lion' )

Syntax Error will be thrown, as all keys must be of the same type

array( 0 => 'dog', 1 => 'lion' ) - boolean true will be changed to integer 1

Syntax Error will be thrown, as array keys can't be boolean values

array( 0 => 'dog', 1 => 'cat' ) - element with boolean key will be ignored

Which of the following functions inserts one or more elements to the beginning of an array?

array_merge()

array_walk()

array_unshift()

array_push()

array_shift()

What does this display? <?php $x = array('a'=>1, 'b'=>2, 'c'=>3); echo key($x);

"a"

array( 0, 1, 2 )

array( 'a', 'b', 'c' )

Which function returns an item from the argument list?

func_get_arg()

None of these

func_num_args()

func_get_args()

<?php $x = 1; echo($x++ + ++$x + $x)*2; Which will the output be?

Which of the following superglobals doesn't contain data from the client?

$_POST

$_COOKIE

$_SESSION

$_SERVER

$_GET

Which function can be used to convert data into a binary string according to a specified format?

pack()

nex2bin()

encode_hex()

printf()

What does mt_srand( [int $a] ); do?

Subtracts a random integer from the passed argument and returns the result

Returns a random integer

Returns a random string of the length specified by the first argument

Initializes a random number generator

This function does not exist

Which of the following protocols is not supported by PHP streams?

imap

ftp

ssh

bz2

Which elements can be encapsulated by namespaces?

Only classes

Classes, functions and constants

Classes, functions, constants and variables

How do you call a static method defined by the called class from a parent class?

None of these. It is not supported in the language. Parent classes cannot access static methods defined by children.

parent::func();

static::someFunc();

$obj = new __CLASS__; $obj->func();

self::someFunc();

True or False? Within the eval() function, code must be opened and closed with PHP tags, i.e. <?php echo 'hi'; ?>

False, but you can still exit and enter PHP mode using tags

True, you MUST use PHP tags as everywhere

False. You can't use PHP tags with eval()

An object can be counted with count() and sizeof() if it:

None of the above

Has a public __count() method

Was cast to an object from an array

Implements ArrayAccess

Which function would you use to obtain the ASCII value of a character?

chr( );

ord( );

val( );

asc( );

Which of the following network transports doesn’t PHP support?

tcp

pdc

unix

udg

When adding ('+' function) two variables of type integer and type string, what type is the resulting value?

Integer

Depends on the content of the string

String

What is the time complexity of a call to array_key_exists()?

O(N^2)

O(N * log N)

O(1)

O(log N)

O(N)

What function allows you to print a backtrace?

debug_backtrace_print

debug_print_backtrace

backtrace_print

backtrace

print_backtrace

Which of the following is not a valid PHP variable type conversion?

array to object

string to object

reference to array

object to reference

Which function is used to read an entire file into an array ?

file_to_array

fwrite

file_get_contents

file

fgets

Which of the following is the predefined class in PHP?

__PHP_Incomplete_Class

Special_Iterator

None of them

ErrorFault

PHP_RpcClient

What data types cannot be used with PHP5 Type Hinting?

Strings, Interface

Integers, Array

Objects, Array

Integer, Strings

What does this code do? namespace Hello\World;

It creates two namespaces : "Hello" and "Hello\World"

It creates two namespaces : "Hello\World" and "World"

It creates one namespace : "World"

It creates two namespaces : "Hello" and "World"

It creates one namespace : "Hello\World"

What is the name of variable storage container in php

Storage

zval

Memcache

Memrise

var

$a = array('z','x','y'); $b = sort($a); The value of $b is?

array('x','y','z')

False

array('z','y','x')

True

Which function returns the size of a specified file on the FTP server?

ftp_file_size()

get_ftp_size()

ftp_amount()

ftp_size()

Is it possible to typehint function arguments using native types (String, Bool, Array, Int, Float, Binary...)?

Yes, using all types

Only Array is supported

All types except String

Is there a function to listen on E_ERROR (fatal) errors?

It's not possible

set_error_handler()

register_shutdown_function()

Which PHP extension allows you to simplify converting between different calendar formats?

date/time

calendar

All of these

Julian

What is the output of the following code: <?php $x = 0x22; echo <<<'END' $x END; ?>

0x22

Syntax error

Which PHP function reads entire file into an array?

file

fopen

readfile

fgets

file_get_contents