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

PHP Basic Algorithm: Exercise-15 with Solution

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.

Sample Solution:

PHP Code :

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

// Test the function with various sets of values
var_dump(test(11, 20, 12));
var_dump(test(30, 30, 17));
var_dump(test(25, 35, 50));
var_dump(test(15, 12, 8));
?>

Explanation:

• Function Definition:
• The test function takes three parameters: $x, $y, and $z.
• Condition Check:
• The function checks if any one of the three parameters ($x, $y, or $z) is within the range [20, 50].
• If at least one of the parameters falls within this range, the function returns true; otherwise, it returns false.
• Function Calls and Output:
• First Call: test(11, 20, 12)
• Only $y (20) is within the range [20, 50], so it returns true.
• Second Call: test(30, 30, 17)
• $x and $y (both 30) are within the range [20, 50], so it returns true.
• Third Call: test(25, 35, 50)
• All values are within the range [20, 50], so it returns true.
• Fourth Call: test(15, 12, 8)
• None of the values are within the range [20, 50], so it returns false.

Output:

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

Flowchart:

PHP Code Editor:

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