How can compatibility issues with different PHP versions be addressed when implementing custom debug functions like the one shared in the forum thread?

To address compatibility issues with different PHP versions when implementing custom debug functions, it is important to use PHP functions and syntax that are supported across various versions. One way to ensure compatibility is to avoid using deprecated functions or features that may be removed in newer PHP versions. Additionally, testing the debug functions on different PHP versions can help identify and resolve any compatibility issues that may arise.

// Custom debug function that is compatible with different PHP versions
function custom_debug($data) {
    if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
        error_log(print_r($data, true));
    } else {
        echo '<pre>';
        print_r($data);
        echo '</pre>';
    }
}

// Example usage
$data = array('apple', 'banana', 'cherry');
custom_debug($data);