Which PHP function is used to extract a slice of an array?

Which PHP construct is commonly used to iterate over elements of an array?

A). foreach loop

B). while loop

C). do-while loop

D). for loop

What will be the output of the following PHP code?
<?php
$colors = array('Red' => 1, 'Green' => 2, 'Blue' => 3);
asort($colors);
foreach ($colors as $color => $value) {
echo '$color: $value ';
}
?

A). Red: 1 Green: 2 Blue: 3

B). 1: Red 2: Green 3: Blue

C). 1: Blue 2: Green 3: Red

D). Red: 3 Green: 2 Blue: 1

What is the purpose of the array_push() function in PHP?

A). To remove elements from an array

B). To add elements to the beginning of an array

C). To add elements to the end of an array

D). To reverse the order of elements in an array

Which PHP function is used to merge two or more arrays into a single array?

A). merge()

B). combine()

C). concat()

D). array_merge()

What will be the output of the following PHP code?
<?php
$numbers = array(10, 20, 30, 40, 50);
array_pop($numbers);
foreach ($numbers as $number) {
echo $number . ' ';
}
?

A). 20 30 40 50

B). 10 20 30 40

C). 10 20 30 40

D). 10 20 30 40 50

What will be the output of the following PHP code?
<?php
$arr1 = array('a', 'b', 'c');
$arr2 = array(1, 2, 3);
$result = array_merge($arr1, $arr2);
foreach ($result as $item) {
echo $item . ' ';
}
?

A). a b c 1 2 3

B). 1 2 3 a b c

C). a b c

D). 1 2 3

What type of index do indexed arrays in PHP use?

A). String

B). Integer

C). Key-value pairs

D). Floating-point number

Which of the following statements is true about associative arrays in PHP?

A). They only allow numeric indices

B). They store elements in a sequential order

C). They use key-value pairs to access elements

D). They cannot be accessed using loop constructs

What will be the output of the following PHP code?
<?php
$info = array('name' => 'John', 'age' => 30, 'city' => 'New York');
echo array_key_exists('age', $info) ? 'Yes' : 'No';
?

A). Yes

B). No

C). John

D). 30

What is the purpose of the array_key_exists() function in PHP?

A). To check if a specified key exists in an array

B). To check if a specified value exists in an array

C). To retrieve all keys from an array

D). To retrieve all values from an array