【发布时间】：2014-08-21 08:34:25
【问题描述】：
谁能检查这个 php 代码并告诉我为什么会出现这个错误：
"Warning: Cannot modify header information - headers already sent by (output started at /home/itechcom/public_html/DesignsbyGabe.com/send_form_email.php:144) in /home/itechcom/public_html/DesignsbyGabe.com/send_form_email.php on line 146"
PHP：
<?php
if(isset($_POST['email'])) {
// EDIT THE 2 LINES BELOW AS REQUIRED
$email_to = "Jonathansumner90@gmail.com";
$email_subject = "contact from Designs by Gabe form";
function died($error) {
// your error code can go here
echo "We are very sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
// validation expected data exists
if(!isset($_POST['first_name']) ||
!isset($_POST['last_name']) ||
!isset($_POST['email']) ||
!isset($_POST['telephone']) ||
!isset($_POST['comments'])) {
died('We are sorry, but there appears to be a problem with the form you submitted.');
}
$first_name = $_POST['first_name']; // required
$last_name = $_POST['last_name']; // required
$email_from = $_POST['email']; // required
$telephone = $_POST['telephone']; // not required
$comments = $_POST['comments']; // required
$error_message = "";
$email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
if(!preg_match($email_exp,$email_from)) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}
$string_exp = "/^[A-Za-z .'-]+$/";
if(!preg_match($string_exp,$first_name)) {
$error_message .= 'The First Name you entered does not appear to be valid.<br />';
}
if(!preg_match($string_exp,$last_name)) {
$error_message .= 'The Last Name you entered does not appear to be valid.<br />';
}
if(strlen($comments) < 2) {
$error_message .= 'The Comments you entered do not appear to be valid.<br />';
}
if(strlen($error_message) > 0) {
died($error_message);
}
$email_message = "Form details below.\n\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "First Name: ".clean_string($first_name)."\n";
$email_message .= "Last Name: ".clean_string($last_name)."\n";
$email_message .= "Email: ".clean_string($email_from)."\n";
$email_message .= "Telephone: ".clean_string($telephone)."\n";
$email_message .= "Comments: ".clean_string($comments)."\n";
// create email headers
$headers = 'From: '.$email_from."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);
?>
<!-- include your own success html here -->
<?php
header("Location: thankyou.html");
?>
<?php
}
?>
HTML：
<form action="send_form_email.php" method="post" name="contactform">
<label for="first_name">First Name *</label>
<input type="text" name="first_name" size="30" maxlength="50" />
<label for="last_name">Last Name *</label>
<input type="text" name="last_name" size="30" maxlength="50" />
<label for="email">Email Address *</label>
<input type="text" name="email" size="30" maxlength="80" />
<label for="telephone">Telephone Number</label>
<input type="text" name="telephone" size="30" maxlength="30" />
<label for="comments">Comments *</label>
<textarea name="comments" rows="6" cols="25"></textarea>
<input id="submit" style="margin-right: 30px;" type="submit" value="Submit" />
之前有人问过这个问题，但不是在这种情况下。消息通过但没有重定向它给我一个错误。我对其他网站使用相同的表单提交代码，它工作正常。
【问题讨论】：
-
第 144 行是哪一行？？
-
有数百个问题解释了导致该错误的原因以及如何修复它。您在发帖前是否尝试过搜索？
-
不要在 header() 上方添加 HTML 输出。
<!-- include your own success html here -->是问题所在。 -
是的，我读过其他类似的问题。他们都没有解决你的问题。
-
第 144 行是标题周围的开始 php 标签所在的位置