<?php
$info = array('name' => 'Alice', 'age' => 25);
echo count($info);
?
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 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
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
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
$numbers = array(10, 20, 30, 40, 50);
array_pop($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 remove the last element from an array?
A). remove()
B). pop()
C). delete()
D). unset()
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 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 output of the following PHP code?<?php
$colors = array('Red', 'Green', 'Blue');
echo $colors[1];
?
A). Red
B). Green
C). Blue
D). 1