How can PHP be used to check if a solution to a mathematical problem is below zero or above zero?

To check if a solution to a mathematical problem is below zero or above zero in PHP, you can simply compare the result of the calculation with zero using an if statement. If the result is less than zero, it means the solution is below zero. If the result is greater than zero, it means the solution is above zero. 

// Calculate the result of the mathematical problem
$result = 10 - 20;

// Check if the result is below zero, above zero, or equal to zero
if ($result < 0) {
    echo "The solution is below zero.";
} elseif ($result > 0) {
    echo "The solution is above zero.";
} else {
    echo "The solution is zero.";
}

Keywords

PHP mathematical problem check below zero above zero

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