PHP函数strip_tags的一个bug浅析_PHP
PHP 函数 strip_tags 提供了从字符串中去除 HTML 和 PHP 标记的功能,该函数尝试返回给定的字符串 str 去除空字符、HTML 和 PHP 标记后的结果。
由于 strip_tags() 无法实际验证 HTML,不完整或者破损标签将导致更多的数据被删除。
比如下述代码:
复制代码 代码如下:
通过 strip_tags($str, ‘
复制代码 代码如下:
而实际操作结果是这样的:
复制代码 代码如下:
这一切都是因为加红的那个左尖括号,查了 PHP 的文档,有一个警告提示:
由于 strip_tags() 无法实际验证 HTML,不完整或者破损标签将导致更多的数据被删除。
既然在执行过滤前无法验证代码正确性,遇到和标签相关的字符 “” 后面的代码就全挂了!

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