php object factory class

<?php
/**
 * 对象工厂
 * @author flynetcn
 */
class ObjectFactory
{
	private static $objSet = array();

	/**
	 * 清空工厂中的对象
	 */
	public function clear()
	{
		self::$objSet = array();
	}

	/**
	 * 在工厂中创建对象并将其返回
	 * 参数格式：$class_name, $class_param1, $class_param2, ...
	 */
	public static function create()
	{
		$argc = func_num_args();
		if ($argc <= 0) {
			throw new Exception(&#39;params error&#39;, 1);
		}
		$args = func_get_args();
		$class_name = array_shift($args);
		$params = $args;
		if (!$params) {
			$class_sign = $class_name;
		} else {
			$param_sign = serialize($params);
			if (strlen($param_sign) > 100) {
				$param_sign = md5($param_sign);
			}
			$class_sign = $class_name.'@'.$param_sign;
		}
		if (isset(self::$objSet[$class_sign])) {
			return self::$objSet[$class_sign];
		}
		$ref = new ReflectionClass($class_name);
		if ($ref->hasMethod('__construct') && !empty($params)) {
			$obj = $ref->newInstanceArgs($params);
		} else {
			$obj = $ref->newInstance();  
		}
		self::$objSet[$class_sign] = $obj;
		return $obj;
	}
}

Copyright Statement: This article is an original article by the blogger and may not be reproduced without the blogger's permission.

The above introduces the PHP object factory class, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.