src/DdvRestfulApi/Abstracts/AuthDataDriver.php
protected function is_php($version)
    {
        static $_is_php;
        $version = (string)$version;

        if (!isset($_is_php[$version])) {
            $_is_php[$version] = version_compare(PHP_VERSION, $version, '>=');
        }

        return $_is_php[$version];
    }
protected function is_php($version)
    {
        static $_is_php;
        $version = (string)$version;

        if (!isset($_is_php[$version])) {
            $_is_php[$version] = version_compare(PHP_VERSION, $version, '>=');
        }

        return $_is_php[$version];
    }
Determines if the current version of PHP is equal to or greater than the supplied value

@param    string
@return    bool    TRUE if the current version is $version or higher