Get class name from file

Question

I have a php file which contains only one class. how can I know what class is there by knowing the filename? I know I can do something with regexp matching but is there a st

Answer 1

This sample returns all classes. If you're looking for a class which is derived of a specific one, use is_subclass_of

$php_code = file_get_contents ( $file );
    $classes = array ();
    $namespace="";
    $tokens = token_get_all ( $php_code );
    $count = count ( $tokens );

    for($i = 0; $i < $count; $i ++)
    {
        if ($tokens[$i][0]===T_NAMESPACE)
        {
            for ($j=$i+1;$j<$count;++$j)
            {
                if ($tokens[$j][0]===T_STRING)
                    $namespace.="\\".$tokens[$j][1];
                elseif ($tokens[$j]==='{' or $tokens[$j]===';')
                    break;
            }
        }
        if ($tokens[$i][0]===T_CLASS)
        {
            for ($j=$i+1;$j<$count;++$j)
                if ($tokens[$j]==='{')
                {
                    $classes[]=$namespace."\\".$tokens[$i+2][1];
                }
        }
    }
    return $classes;