PHP Exercises: Check if a given array of integers contains no 3 or a 5

Last update on May 28 2025 13:04:42 (UTC/GMT +8 hours)

115. Array Contains No 3 or 5 Check

Write a PHP program to check if a given array of integers contains no 3 or a 5.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of numbers as a parameter
function test($nums)
 { 
    // Initialize variables $three and $five with values of false
    $three = false;
    $five = false;

    // Iterate through the elements of the array using a for loop
    for ($i = 0; $i < sizeof($nums); $i++)
    {
        // Check if the current element is equal to 3, set $three to true if true
        if ($nums[$i] == 3) {$three = true;}
        
        // Check if the current element is equal to 5, set $five to true if true
        if ($nums[$i] == 5) {$five  = true;}
        
        // Check if both $three and $five are true, return false if true
        if ($three && $five) return false;
    }

    // Return true if there are no consecutive occurrences of both 3 and 5, otherwise return false
    return true;
 }   

// Use 'var_dump' to print the result of calling 'test' with different arrays
var_dump(test([5, 5, 5, 5, 5]));
var_dump(test([3, 3, 3, 3]));
var_dump(test([3, 3, 3, 5, 5, 5]));
var_dump(test([1, 6, 8, 10]));
?>

Sample Output:

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

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to return true if an array does not contain any occurrences of 3 or 5.
Write a PHP function to iterate over an array and output true only if neither 3 nor 5 is present.
Write a PHP program to use logical conditions to verify that an array lacks both 3 and 5.
Write a PHP script to employ array filtering to confirm an array is free of the values 3 and 5, then return a boolean.

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