PHP Exercises: Check two given arrays of integers of length 1 or more and return true if they have the same first element or they have the same last element

Last update on December 20 2024 10:26:48 (UTC/GMT +8 hours)

Write a PHP program to check two given arrays of integers of length 1 or more and return true if they have the same first element or they have the same last element.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that checks if the first element of either array is equal
// to the first element of the other array, or if the last element of either array is equal
// to the last element of the other array.
function test($a1, $a2)
{ 
    // Check if the first element of either array is equal to the first element of the other array,
    // or if the last element of either array is equal to the last element of the other array.
    return $a1[0] == $a2[0] || $a1[sizeof($a1) - 1] == $a2[sizeof($a2) - 1];
}

// Test the 'test' function with different arrays, then display the results
var_dump(test([10, 20, 40, 50], [10, 20, 40, 50]));
var_dump(test([10, 20, 40, 10], [10, 20, 40, 5]));
var_dump(test([12, 24, 35, 55], [1, 20, 40, 5]));
?>

Explanation:

Function Definition:

The function test is defined with two parameters:

$a1: the first array.
$a2: the second array.

Condition Check:

The function checks two conditions using logical OR (||):

First Element Equality: It checks if the first element of $a1 ($a1[0]) is equal to the first element of $a2 ($a2[0]).
Last Element Equality: It checks if the last element of $a1 ($a1[sizeof($a1) - 1]) is equal to the last element of $a2 ($a2[sizeof($a2) - 1]).

Return Statement:

The function returns true if either condition is satisfied; otherwise, it returns false.

Output:

bool(true)
bool(true)
bool(false)

Flowchart:

PHP Code Editor:

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