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将 qwer://xxx/545/0 替换为 qwer://trading_system_xxx/0/545
$str = ‘<a href="qwer://xxx/545/0">xxx</a>‘; $str = preg_replace(‘/qwer:\/\/xxx\/(\d+)\/(\d+)/i‘ ,‘qwer://trading_system_xxx/$2/$1/‘,$str);
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原文地址:http://www.cnblogs.com/lzs-888/p/5978286.html