PHP Exercises: Create a new array containing the middle elements from the two given arrays of integers, each length 5

Last update on December 20 2024 10:26:51 (UTC/GMT +8 hours)

Write a PHP program to create a new array containing the middle elements from the two given arrays of integers, each length 5.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes two arrays as parameters
function test($nums1, $nums2)
 { 
    // Return a new array containing the third element from both input arrays
    return [$nums1[2], $nums2[2]];
 }   

// Create two arrays $nums1 and $nums2 with numeric values
$nums1 = [10, 20, -30, -40, 30];
$nums2 = [10, 20, 30, 40, 30];

// Print the original contents of array $nums1 as a string using 'implode' and 'echo'
echo "Original array1: " . implode(',', $nums1) . "\n";

// Print the original contents of array $nums2 as a string using 'implode' and 'echo'
echo "Original array2: " . implode(',', $nums1) . "\n";

// Call the 'test' function with arrays $nums1 and $nums2 and store the result in $result
$result = test($nums1, $nums2);

// Print the new array containing the third element from both input arrays using 'implode' and 'echo'
echo "New array: " . implode(',', $result);
?>

Explanation:

Function Definition:

A function named test is defined, which takes two parameters:

$nums1: the first input array.
$nums2: the second input array.

Returning Elements:

The function returns a new array that contains:

The third element from $nums1 ($nums1[2]).
The third element from $nums2 ($nums2[2]).

Array Initialization:

Two arrays are created:

$nums1 = [10, 20, -30, -40, 30]
$nums2 = [10, 20, 30, 40, 30]

Display Original Arrays:

The contents of $nums1 are printed using implode to format it as a string:
The contents of $nums2 are intended to be printed, but there is a mistake in the code. It incorrectly prints $nums1 again instead of $nums2.

Function Call:

The test function is called with the two arrays, and the result is stored in the variable $result.

Display New Array:

The new array, which contains the third elements from both input arrays, is printed using implode:

Output:

Original array1: 10,20,-30,-40,30
Original array2: 10,20,-30,-40,30
New array: -30,30

Flowchart:

PHP Code Editor:

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