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is_a

(PHP 4 >= 4.2.0, PHP 5)

is_a -- 如果对象属于该类或该类是此对象的父类则返回 TRUE

描述

bool is_a ( object object, string class_name )

如果对象是该类或该类是此对象的父类则返回 TRUE，否则返回 FALSE。

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Last updated: Thu Jul 7 19:13:47 2005 CST