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 PHP function is used to determine the number of elements in an array?
A). size()
B). count()
C). length()
D). elements()
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
$colors = array('Red', 'Green', 'Blue');
array_push($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
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()
What will be the output of the following PHP code?<?php
$matrix = array(
array(1, 2, 3),
array(4, 5, 6),
array(7, 8, 9)
);
echo $matrix[1][2];
?
A). 1
B). 2
C). 4
D). 6
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 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
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