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求好手写一段正则

WBOY
WBOYOriginal
2016-06-13 12:52:58884browse

求高手写一段正则
需求:把一个字符串中的{liter}和{/liter}之间的内容提取出来(包括{literal}和{/literal}),然后md5加密后再放回原处

我是这样写的

<br />
<br />
$str="的分公司大哥reterty{literal}jpojp{/literal}ojojwr154654654wete梵{literal}蒂冈的身份{/literal}广东省rowetw";<br />
<br />
<br />
$new_str=preg_replace('/\{literal\}(.*?)\{\/literal\}/isum',md5("$1"),$new_str);<br />
print_r($new_str);<br />

但是这样的话 2个{liter}内的md5的值都一样,不知道哪里错了,请高手修改(还用preg_replace函数)


------解决方案--------------------
$new_str=preg_replace('/\{literal\}(.*?)\{\/literal\}/ise','md5("$1")',$str); 
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