<?php
  header ( "Content-Type: text/html; charset=UTF-8" );
  $reply = "";
  if ( isset($_POST["email_address"]) )
  {
    $email_address = $_POST["email_address"];
    $pattern = "/^([0-9A-Za-z\\-_\\.]+)@([0-9a-z]+\\.[a-z]{2,3}(\\.[a-z]{2})?)$/i";
    if ( preg_match( $pattern, $email_address ) )
    {
      $reply = "您输入的电子邮件地址合法

\n";
      $user_name = preg_replace( $pattern ,"$1", $email_address );
      $domain_name = preg_replace( $pattern ,"$2", $email_address );
      $reply .= "用户名：".$user_name."
\n";
      $reply .= "域名：".$domain_name."
\n\n";
    }
    else
    {
      $reply = "您输入的电子邮件地址不合法";
    }
  }
?>





 
 

电子邮件地址验证程序

请输入电子邮件地址：



<?php
  echo $reply;
?>