class_exists函数

简介:

语法

bool class_exists ( string $class_name [, bool $autoload ] )

说明

如果由 class_name 所指的类已经定义,此函数返回 TRUE,否则返回 FALSE



本文转自 素颜猪 51CTO博客,原文链接:http://blog.51cto.com/suyanzhu/1896161

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