采集邮箱的php代码(抓取网页中的邮箱地址)

<?php 
$url='https://3water.com'; //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)); 
?>