php 实例之使用表单提交的方法来发送邮件(用户反馈)

php使用表单提交的方法来发送邮件。

主要涉及到服务器如何处理表单的数据，以及发送邮件函数mail的用法。代码如下：

$self = $_SERVER['PHP_SELF'];

$username = $_POST['username'];

$useraddr = $_POST['useraddr'];

$comments = $_POST['comments'];

$sent = $_POST['sent'];

$form ="

if($sent)

{

$valid=true;

if( !$username )

{ $errmsg.="Enter your name...
"; $valid = false; }

if( !$useraddr )

{ $errmsg .="Enter your email address...
"; $valid = false; }

if( !$comments )

{ $errmsg.="Enter your comments...
"; $valid = false; }

$useraddr = trim($useraddr);

$_name = "/^[-!#$%&'*+./0-9=?A-Z^_'{|}~]+";

$_host = "([-0-9A-Z]+.)+";

$_tlds = "([0-9A-Z]){2,4}$/i";

if( !preg_match( $_name."@".$_host .$_tlds,$useraddr ) )

{

$errmsg.="Email address has incorrect format!
";

$valid=false;

}

}

if($valid != true)

{

echo( $errmsg.$form );

}

else

{

$to = "php@h.com";

$re = "Feedback from $username";

$msg = $comments;

$headers = "MIME-Version: 1.0rn";

$headers .= "Content-type: text/html;";

$headers .= "charset="iso-8859-1"rn";

$headers .= "From: $useraddr rn";

if(mail($to,$re,$msg,$headers))

{ echo("Your comments have been sent - thanks $username");}

}

?>

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