src/OwpSupportMethods.inc.php
static function file_get_php_classes($filepath)
    {
        $php_code = file_get_contents($filepath);
        $classes  = OwpSupportMethods::get_php_classes($php_code);
        return $classes;

    }
static function file_get_php_classes($filepath)
    {
        $php_code = file_get_contents($filepath);
        $classes  = OwpSupportMethods::get_php_classes($php_code);
        return $classes;

    }
file_get_php_classes

@method file_get_php_classes($filepath) Get classes from a file.
@param  $filepath
@return array