采集邮箱的php代码(抓取网页中的邮箱地址)

<?php
$url='http://www.jb51.net'; //这个网页里绝对含有邮件地址。
$content=file_get_contents($url);
//echo $content;
function getemail($str) {
    //$pattern = "/([a-z0-9]*[-_.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[.][a-z]{2,3}([.][a-z]{2})?/i";
    $pattern = "/([a-z0-9-_.]+@[a-z0-9]+.[a-z0-9-_.]+)/";
    preg_match_all($pattern,$str,$emailarr);
    
    return $emailarr[0];
}
print_r( getemail($content));
?>