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

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
$arr = array(10, 20, 30, 40, 50);
$slice = array_slice($arr, 2);
foreach ($slice as $item) {
echo $item . ' ';
}
?

A). 10 20 30 40 50

B). 10 20

C). 30 40 50

D). 30 40 50

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

A). size()

B). count()

C). length()

D). elements()

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 type of index do indexed arrays in PHP use?

A). String

B). Integer

C). Key-value pairs

D). Floating-point number

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 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

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

Which PHP function is used to remove the last element from an array?

A). remove()

B). pop()

C). delete()

D). unset()

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

A). splice()

B). slice()

C). extract()

D). split()