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php-对mysql like 内容进行转义的函数 的疑问？
- WBOYOriginal
- 2016-06-02 11:33:421462browse
php
<code> /** * 对 MYSQL LIKE 的内容进行转义 * * @access public * @param string string 内容 * @return string */function mysql_like_quote($str){ return strtr($str, array("\\\\" => "\\\\\\\\", '_' => '\_', '%' => '\%', "\'" => "\\\\\'"));}</code>
函数里为什么要把四个反斜杠转换成八个反斜杠？ 把一个反斜杠加单引号转成五个反斜杠加单引号？
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