Using reflection to obtain method signatures

gistfile1.txt

<?php

/**
 * Necessary because $param->getClass() requires the class to be loaded.
 * We don't want to have to load every class.
 */
function getClassName(ReflectionParameter $param) {
    preg_match('/\[\s\<\w+?>\s([\w]+)/s', $param->__toString(), $matches);
    return isset($matches[1]) ? $matches[1] : null;
}

interface Vehicle {
	/**
	 * I'm a docblock!
	 */
	public function setColor(Color $color, $foo = 'foo');
	
	public function setWeight(UnitOfWeight $weight);
}

// ------ //

echo PHP_EOL . '--------------------------------------------------------' . PHP_EOL;

$reflection = new ReflectionClass('Vehicle');
foreach ($reflection->getMethods() as $method)
{
	echo PHP_EOL . '-------------' . PHP_EOL;

	$docBlock  = $method->getDocComment();
	$modifiers = implode(' ', Reflection::getModifierNames($method->getModifiers()));
	$name      = $method->name;
	$params    = array();

	foreach ($method->getParameters() as $param)
	{
		$className = getClassName($param);

		$sig  = ! empty($className) ? $className . ' ' : null;
		$sig .= '$' . $param->name;
		if ($param->isOptional())
		{
			$sig .= ' = ' . $param->getDefaultValue();
		}

		$params[] = $sig;
	}

	echo ! empty($docBlock) ? $docBlock . PHP_EOL : null;
	echo ! empty($modifiers) ? $modifiers . ' ' : null;
	echo "function $name" . '(' . implode(', ', $params) . ')';
}