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

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

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

What is the correct way to access the first element of an indexed array in PHP?

A). $array[0]

B). $array[1]

C). $array['first']

D). $array['0']

What will be the output of the following PHP code?
<?php
$person = array('name' => 'John', 'age' => 30, 'city' => 'New York');
echo $person['age'];
?

A). name: John

B). age: 30

C). city: New York

D). John

What will be the output of the following PHP code?
<?php
$colors = array('Red', 'Green', 'Blue');
array_push($colors, 'Yellow', 'Orange');
foreach ($colors as $color) {
echo $color . ' ';
}
?

A). Red Green Blue Yellow Orange

B). Yellow Orange Red Green Blue

C). Green Blue Red Yellow Orange

D). Yellow Orange

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

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

A). merge()

B). combine()

C). concat()

D). array_merge()

Which PHP function is used to determine the number of elements in an array?

A). size()

B). count()

C). length()

D). elements()

What will be the output of the following PHP code?
<?php
$info = array('name' => 'Alice', 'age' => 25);
echo count($info);
?

A). 1

B). 2

C). 25

D). Alice

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

A). splice()

B). slice()

C). extract()

D). split()