Which PHP function is used to extract a slice of an array?
A). splice()
B). slice()
C). extract()
D). split()
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 remove the last element from an array?
A). remove()
B). pop()
C). delete()
D). unset()
What is the correct syntax for creating a multidimensional array in PHP?
A). $array = array(array(1, 2, 3), array(4, 5, 6), array(7, 8, 9));
B). $array = array([1, 2, 3], [4, 5, 6], [7, 8, 9]);
C). $array = array{1, 2, 3}, {4, 5, 6}, {7, 8, 9};
D). $array = array{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
What will be the output of the following PHP code?<?php
$numbers = array(10, 20, 30, 40, 50);
echo count($numbers);
?
A). 10
B). 20
C). 5
D). 50
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 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
$info = array('name' => 'Alice', 'age' => 25);
echo count($info);
?
A). 1
B). 2
C). 25
D). Alice
Which PHP function is used to sort an array in ascending order, maintaining the key-value pairs?
A). sort()
B). ksort()
C). asort()
D). rsort()
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