<?php
$info = array('name' => 'Alice', 'age' => 25);
echo count($info);
?
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
$colors = array('Red' => 1, 'Green' => 2, 'Blue' => 3);
asort($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 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
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 is the output of the following PHP code?<?php
$colors = array('Red', 'Green', 'Blue');
echo $colors[1];
?
A). Red
B). Green
C). Blue
D). 1
Which PHP function is used to extract a slice of an array?
A). splice()
B). slice()
C). extract()
D). split()
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
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 way to access the first element of an indexed array in PHP?
A). $array[0]
B). $array[1]
C). $array['first']
D). $array['0']