Home Backend Development PHP Tutorial 正则匹配的有关问题

正则匹配的有关问题

Jun 13, 2016 pm 01:34 PM
img noscript pattern quot str

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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