请问大神，问题在哪
<?php $subject = "my email is spark@imooc.com"; $pattern='/\s(\w+)@(\w+)\.(com|cn)/'; preg_match($pattern,$subject,$matches); print_r($matches[0]); //在这里补充代码，实现正则匹配，并输出邮箱地址 $subject = "my email is spark@imooc.com";
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