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* [\_\_autoload](https://www.php.net/manual/en/function.autoload.php)—尝试加载未定义的类 * [call\_user\_method\_array](https://www.php.net/manual/en/function.call-user-method-array.php)—调用带有参数数组的用户方法 * [call\_user\_method](https://www.php.net/manual/en/function.call-user-method.php)—在特定对象上调用用户方法 * [class\_alias-](https://www.php.net/manual/en/function.class-alias.php)为类创建别名 * [class\_exists](https://www.php.net/manual/en/function.class-exists.php)—检查是否已定义类 * [get\_drawn\_class](https://www.php.net/manual/en/function.get-called-class.php)—“最新静态绑定”类名称 * [get\_class\_methods](https://www.php.net/manual/en/function.get-class-methods.php)—获取类方法的名称 * [get\_class\_vars](https://www.php.net/manual/en/function.get-class-vars.php)—获取类的默认属性 * [get\_class](https://www.php.net/manual/en/function.get-class.php)—返回对象的类的名称 * [get\_declared\_classes](https://www.php.net/manual/en/function.get-declared-classes.php)—返回具有已定义类名称的数组 * [get\_declared\_interfaces](https://www.php.net/manual/en/function.get-declared-interfaces.php)—返回所有已声明接口的数组 * [get\_declared\_traits](https://www.php.net/manual/en/function.get-declared-traits.php)—返回所有已声明特征的数组 * [get\_object\_vars](https://www.php.net/manual/en/function.get-object-vars.php)—获取给定对象的属性 * [get\_parent\_class](https://www.php.net/manual/en/function.get-parent-class.php)—检索对象或类的父类名称 * [interface\_exists](https://www.php.net/manual/en/function.interface-exists.php)—检查是否已定义接口 * [is\_a](https://www.php.net/manual/en/function.is-a.php)—检查对象是否属于此类或作为其父级之一具有此类 * [is\_subclass\_of](https://www.php.net/manual/en/function.is-subclass-of.php)—检查对象是否具有此类作为其父级之一或实现它 * [method\_exists](https://www.php.net/manual/en/function.method-exists.php)—检查类方法是否存在 * [property\_exists](https://www.php.net/manual/en/function.property-exists.php)—检查对象或类是否具有属性 * [trait\_exists](https://www.php.net/manual/en/function.trait-exists.php)—检查特征是否存在