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Tag: isset

Posted on October 13, 2010

PHP: empty(), is_null(), isset()真值表(区别)

原来很迷茫,只是在用,也没有出过问题,有时间了,就找了下资料学习了下。记录一下。
原文:http://www.blueshoes.org/en/developer/php_cheat_sheet/

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