php Email地址验证程序
直接将以下代码拷贝到php文件测试即可：<?php header ( "Content-Type: text html; charset=UTF-8" ); $reply = ""; i
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直接将以下代码拷贝到php文件测试即可：<?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";
//备用正则表达式$pattern = "/^[a-z]([a-z0-9]*[-_.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[.][a-z]{2,3}([.][a-z]{2})?$/i";
//备用正则表达式$pattern = "/([a-z0-9]*[-_.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[.][a-z]{2,3}([.][a-z]{2})?/i";
if ( preg_match( $pattern, $email_address ) )
{
$reply = "您输入的Email地址合法<br /><br />n";
$user_name = preg_replace( $pattern ,"$1", $email_address );
$domain_name = preg_replace( $pattern ,"$2", $email_address );
$reply .= "用户名：".$user_name."<br />n";
$reply .= "域名：".$domain_name."<br />rn";
}
else
{
$reply = "您输入的Email地址不合法";
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh" xml:lang="zh">
<head>
<title>Email地址验证程序</title>
</head>
<body style="text-align: center;">
<h1>Email地址验证程序</h1>
<form action="#" method="post">
请输入Email地址：<input name="email_address" type="text" style="width: 300px;" /><br />
<input type="submit" value="验证Email地址" />
</form>
<?php
echo $reply;
?>
</body>
</html>
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标题：php Email地址验证程序
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