reflect.php

// Require the file

$class = "ClassName";

$r = new ReflectionClass($class);
$str = '';
foreach($r->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
    $rm = new ReflectionMethod($class, $method->name);
    $pieces = array();
    foreach($rm->getParameters() as $params ) {
        $pieces[] = $params->name;
    }
    $str .= lcfirst($method->name) . '(' . implode(',', $pieces) . ')' . PHP_EOL;
}
file_put_contents('classes.txt', $str);

// You will get output in classes.txt . This only takes public methods..