How can the die() function in PHP behave differently when passed a numeric value like '0' compared to a string value, and what are the implications for script termination?

When the die() function in PHP is passed a numeric value like '0', it will still terminate the script execution and display the message. However, if a string value is passed, the script will terminate but the message will not be displayed. To ensure consistent behavior, always pass a string message to die().

// Example of using die() with a string message
$var = 0;

if ($var == 0) {
    die("Error: Variable cannot be zero.");
}