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看不动的正则表达式解决办法

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Release: 2016-06-13 12:58:40
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看不动的正则表达式
$compileStr = preg_replace('$\r\n|\x9|\/\/$','', $compileStr);


这里面的 $\r\n|\x9|\/\/$ 是什么含义 哟

特别是那一个 |\x9|


------解决方案--------------------
  就是 或者

\x9 就是16进制9的ascii字符
------解决方案--------------------
$\r\n
------解决方案--------------------
\x9
------解决方案--------------------
\/\/$

\r 回车
\n 换行
\x9 制表符 常写作 \t 就是 Tab 键
\/ 斜杠,转义符 \ 应不要。因为分界符已不是默认的 /,而是自定义的 $



------解决方案--------------------
 逻辑运算符 或

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