PHP Exercises: Check if a given array of integers and length 2, does not contain 15 or 20

Last update on May 28 2025 13:04:51 (UTC/GMT +8 hours)

96. Array Does Not Contain 15 or 20 Check

Write a PHP program to check if a given array of integers and length 2, does not contain 15 or 20.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of numbers as a parameter
function test($nums)
 { 
    // Return true if the first element is not equal to 15 and not equal to 20,
    // and the second element is not equal to 15 and not equal to 20
    return $nums[0] != 15 && $nums[0] != 20 && $nums[1] != 15 && $nums[1] != 20;
 }   

// Check and display the result of calling 'test' with the array [12, 20]
var_dump(test([12, 20]));

// Check and display the result of calling 'test' with the array [14, 15]
var_dump(test([14, 15]));

// Check and display the result of calling 'test' with the array [11, 21]
var_dump(test([11, 21]));
?>

Explanation:

Function Definition:

A function named test is defined, which takes one parameter:

$nums: an array of numbers.

Return Condition:

The function checks if:

The first element of the array ($nums[0]) is not equal to 15 and not equal to 20.
The second element of the array ($nums[1]) is not equal to 15 and not equal to 20.

If all these conditions are true, the function returns true; otherwise, it returns false.

Output:

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

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to verify that a two-element array does not include the numbers 15 or 20, returning a boolean result.
Write a PHP function to scan a small array and output true if neither 15 nor 20 is present.
Write a PHP program to evaluate an array of two numbers and return false if either 15 or 20 exists, true otherwise.
Write a PHP script to check a two-element array for the absence of specific values (15 and 20) using conditional logic.

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