PHP Exercises: Check whether two given integer values are in the range 20..50 inclusive

PHP Basic Algorithm: Exercise-16 with Solution

Write a PHP program to check whether two given integer values are in the range 20..50 inclusive. Return true if one or other is in the said range otherwise false.

Sample Solution:

PHP Code :

<?php
// Define a function that checks if at least one of the given integer values is in the range 20 to 50 inclusive
function test($x, $y) 
{
    // Check if either $x or $y is within the range [20, 50] inclusive
    return ($x >= 20 && $x <= 50) || ($y >= 20 && $y <= 50);
}

// Test the function with various pairs of values
var_dump(test(20, 84)); // true: 20 is within the range
var_dump(test(14, 50)); // true: 50 is within the range
var_dump(test(11, 45)); // true: 45 is within the range
var_dump(test(25, 40)); // true: both 25 and 40 are within the range
var_dump(test(10, 19)); // false: neither 10 nor 19 is within the range

?>

Explanation:

• Function Definition:
• The test function takes two parameters, $x and $y.
• Range Check:
• The function checks if either $x or $y falls within the range [20, 50] (inclusive).
• If at least one of the values is within this range, it returns true; otherwise, it returns false.
• Function Calls and Output:
• First Call: test(20, 84)
• $x is 20, which is within the range [20, 50], so it returns true.
• Second Call: test(14, 50)
• $y is 50, which is within the range [20, 50], so it returns true.
• Third Call: test(11, 45)
• $y is 45, which is within the range [20, 50], so it returns true.
• Fourth Call: test(25, 40)
• Both $x and $y (25 and 40) are within the range [20, 50], so it returns true.
• Fifth Call: test(10, 19)
• Neither $x nor $y is within the range [20, 50], so it returns false.

Output:

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

Flowchart:

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP program to check whether three given integer values are in the range 20..50 inclusive. Return true if 1 or more of them are in the said range otherwise false.
Next: Write a PHP program to check if a string 'yt' appears at index 1 in a given string. If it appears return a string without 'yt' otherwise return the original string.