PHP Exercises: Check if one given temperatures is less than 0 and the other is greater than 100

Last update on April 16 2025 12:52:43 (UTC/GMT +8 hours)

13. Temperature Extremes Check

Write a PHP program to check if one given temperatures is less than 0 and the other is greater than 100.

Sample Solution:

PHP Code :

<?php
// Define a function named "test" that takes two parameters: $temp1 and $temp2
function test($temp1, $temp2) 
{
    // Check if $temp1 is less than 0 and $temp2 is greater than 100,
    // or if $temp2 is less than 0 and $temp1 is greater than 100.
    return $temp1 < 0 && $temp2 > 100 || $temp2 < 0 && $temp1 > 100;
}

// Call the test function with arguments 120 and -1, and var_dump the result
var_dump(test(120, -1));

// Call the test function with arguments -1 and 120, and var_dump the result
var_dump(test(-1, 120));

// Call the test function with arguments 2 and 120, and var_dump the result
var_dump(test(2, 120));
?>

Explanation:

• Function Definition:
• The test function accepts two parameters, $temp1 and $temp2.
• Condition Check:
• The function checks if either of the following conditions is true:
• $temp1 is less than 0, and $temp2 is greater than 100.
• $temp2 is less than 0, and $temp1 is greater than 100.
• If either condition is met, the function returns true; otherwise, it returns false.
• Function Calls and Output:
• First Call: test(120, -1)
• $temp1 is greater than 100 and $temp2 is less than 0, so it returns true.
• Second Call: test(-1, 120)
  • $temp1 is less than 0 and $temp2 is greater than 100, so it returns true.
• Third Call: test(2, 120)
  • Neither condition is met, so it returns false.

Output:

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

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a PHP script to determine if one temperature is below 0 and the other above 100 using relational operators.
• Write a PHP function to check two temperature values and return true if one is negative while the other exceeds 100.
• Write a PHP program to validate temperature extremes where one value is below freezing and the other is above boiling point.
• Write a PHP script to compare two temperatures and output a boolean based on whether they cross the specified extreme thresholds.

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