你把$data写入临时文件调试一下看看，究竟是否获得了网页代码，网页代码里面是否有
标签，或者是<title>的写法与预期不一致。<br><br>调试语句：<br>file_put_contents('debug.1.txt', $data);<br><br>另外，使用修饰符/s或者/m试试看，有一个的功能是使用.可以匹配回车和换行。</p>
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