$re = '/在此输入你的正则表达式/';
$str = '<a id="link-1" href="/regexp-one">正则文章合集(All In One)</a>
<a id="link-2" href="/my-regexp">正则入门教程</a>
<a id="link-3" href="/deep-regexp">正则高级教程</a>
<a id="link-4" href="/regexp-lookaround">正则环视详解</a>
<a id="link-5" href="/php-curl">PHP cURL应用</a>';
preg_match_all($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