$re = '/(?<table><table border="0" cellpadding="0" cellspacing="0" align="left" style="width:100%;border-top:3px solid #7342e8">[\w\W]*?<\/table>)/';
$str = '<table border="0" cellpadding="0" cellspacing="0" align="left" style="width:100%;border-top:3px solid #7342e8">
<tbody><tr>
<td width="90" height="43" style="padding-left:14px;border-bottom:1px solid #ebebeb;background-color:#f6f6f6;font-family:'\\00b098\\00b214\\00ace0\\00b515',NanumGothic,'\\00b9d1\\00c740\\00ace0\\00b515',Malgun Gothic,'\\00b3cb\\00c6c0',Dotum,Helvetica,'Apple SD Gothic Neo',Sans-serif;font-size:13px;color:#696969">space</td>
</tbody></table>';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php