正则匹配的有关问题

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Release: 2016-06-13 10:18:04
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正则匹配的问题
$str="";
$pattern="/\正则匹配的有关问题/iU";
preg_match($pattern,$str,$arr);

为什么匹配不成功


------解决方案--------------------
$str="";
$pattern="/\正则匹配的有关问题/";
preg_match($pattern,$str,$arr);
var_dump($arr);
------解决方案--------------------
$pattern="/\正则匹配的有关问题]*?>/i"; //何必那么麻烦。这样就行了。

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