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PHP basics
1/25
PHP is considered a server-side scripting language
True
False
Next >
2/25
Which of the following extensions is a correct PHP file extension?
.html
.cpp
.php
.pxp
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3/25
Which is the correct way to start a single line PHP comment?
//
#
!!
/
Next >
4/25
How do you output "Hello W3docs" in PHP?
Hello W3docs;
echo Hello W3docs;
echo (Hello W3docs) ;
echo ("Hello W3docs") ;
echo 'Hello W3docs' ;
Next >
5/25
An array is a special variable that is capable of holding more than one value at a time.
True
False
Next >
6/25
What will be displayed in the browser?
Hello
Welcome to
Welcome to W3docs
Hello W3docs
Next >
7/25
Which of the following is the correct way to use the include command?
include 'file.txt';
include 'file.php';
file.php;
"file.php";
Next >
8/25
Which function in PHP is used to read the content of a file?
file_get_contents()
fopen()
readfile()
file()
Next >
9/25
How do you declare a constant in PHP?
const CONSTANT = 'value';
define('CONSTANT', 'value');
create_constant('CONSTANT', 'value');
#define CONSTANT 'value'
Next >
10/25
How do you handle exceptions in PHP?
Using 'if-else' statements
Using 'try-catch' blocks
Using 'error-reporting' functions
PHP does not support exception handling
Next >
11/25
What is the correct way to include a file in PHP without causing a fatal error if the file is missing?
include_once('file.php');
require('file.php');
include('file.php');
require_once('file.php');
Next >
12/25
How can you declare a PHP variable that retains its value between function calls?
static $var;
public $var;
global $var;
persistent $var;
Next >
13/25
Which PHP function is used to send a custom HTTP header?
set_header()
http_header()
header()
send_header()
Next >
14/25
Which statement is true about PHP namespaces?
PHP does not support namespaces
Namespaces are used to create aliases for classes
Namespaces are used to organize code into logical groups
Namespaces are used for extending classes
Next >
15/25
Which PHP function is used to generate a unique identifier?
md5()
uniqid()
random_id()
generate_id()
Next >
16/25
What is the difference between 'echo' and 'print' in PHP?
'echo' is faster than 'print'
'print' can output multiple values, 'echo' cannot
'echo' returns a value, 'print' does not
There is no difference
Next >
17/25
Which function in PHP is used to get the length of a string?
strlen()
strlength()
stringlen()
length()
Next >
18/25
What is the purpose of the 'array_merge()' function in PHP?
Merges one or more arrays into one array
Finds the intersection of two arrays
Splits an array into multiple arrays
Duplicates an array
Next >
19/25
How do you declare a global variable in PHP?
global $variable;
public $variable;
$variable = global;
declare($variable);
Next >
20/25
Which PHP method is used to create a new object from a class?
new
create
construct
initialize
Next >
21/25
In PHP, which operator is used for error control?
@
#
!
$
Next >
22/25
What does the PHP function 'array_slice()' do?
Removes a portion of an array and returns it
Slices an array into two arrays
Creates a copy of an array
Reduces the size of an array
Next >
23/25
Which function in PHP can be used to create a new directory?
mkdir()
create_dir()
new_directory()
dir_create()
Next >
24/25
How can you append an element to an existing array in PHP?
$array[] = 'new_element';
array_append($array, 'new_element');
$array.add('new_element');
append($array, 'new_element');
Next >
25/25
What is the use of the 'empty()' function in PHP?
Checks if a variable is empty
Empties the content of a variable
Deletes a variable
Checks if a variable is not set
Next >
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