PHP Exercises: Check if a given array of integers contains 5 next to a 5 somewhere

Last update on April 16 2025 12:55:17 (UTC/GMT +8 hours)

110. Contains 5 Next to 5 Check in Array

Write a PHP program to check if a given array of integers contains 5 next to a 5 somewhere.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of numbers as a parameter
function test($nums)
 { 
    // Iterate through the elements of the array up to the second-to-last element
    for ($i = 0; $i < sizeof($nums) - 1; $i++)
    {
        // Check if the current element is 5 and is equal to the next element
        if ($nums[$i] == 5 && $nums[$i] == $nums[$i + 1]) return true;
    }

    // Return false if there are no consecutive elements equal to 5
    return false;
 }   

// Use 'var_dump' to print the result of calling 'test' with different arrays
var_dump(test([1, 5, 6, 9, 10, 17]));
var_dump(test([1, 5, 5, 9, 10, 17]));
var_dump(test([1, 5, 5, 9, 10, 17, 5, 5]));
?>

Sample Output:

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

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to scan an array of integers and return true if any two adjacent elements are both 5.
Write a PHP function to iterate through an array and check for consecutive occurrences of the number 5.
Write a PHP program to use a loop to compare neighboring elements and verify the presence of a pair of 5's.
Write a PHP script to determine if the given array contains a 5 immediately followed by another 5 using index-based comparisons.

PHP Code Editor:

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