每次在提交表单数据后刷新页面时我们如何限制发送邮件 [英] how we restrict to send mail every time the page is refreshed after submit form data
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问题描述
- >>我在php中创建了一个表单页面。
- >>点击提交按钮后，它会重定向到另一个php页面（sendmail.php）
- >>每次用户刷新页面后，每次都会发送邮件。
请在表格提交后帮助我们限制发送邮件。
sendmail.php页面如下
< ！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 >
< head >
< / head >
< body >
<？ php
if（！empty（$ _ REQUEST [email]） ）
{
// < span class =code-summarycomment> EDIT 2 LINES BELOW AS REQUIRED
$ email_to = kadian2010 @ gmail.com ;
$ email_subject = 接纳查询详细信息 ;
function 死亡（$ error） {
// 您的 错误 代码 < span class =code-summarycomment>可以 go 此处
echo 我们 very 抱歉， 但 < span class =code-summarycomment> error（s） 找到 with 表格 你 已提交。 ;
echo 这些 错误 出现 。< br / > < br / > ;
echo $ error。< br / > < br / > ;
echo请返回并修复这些错误。< br / > < br / > ;
die（）;
}
//验证预期数据存在
if（！isset（$ _ REQUEST ['name']）||
！isset（$ _ REQUEST ['email ']）||
！isset（$ _ REQUEST ['phone']）||
！isset（$ _ REQUEST ['course']）||
！isset（$ _ REQUEST [' city']）||
！isset（$ _ REQUEST ['comments']）||
！isset（$ _ REQUEST ['security_code']））{
death（'对不起' ，但您提交的表单似乎有问题。'）;
}
$ first_name = $ _REQUEST ['name']; //必需
$ email_from = $ _REQUEST ['email']; //必需
$ telephone = $ _REQUEST ['phone']; //必需
$ course = $ _REQUEST ['course']; //必需
$ city = $ _REQUEST ['city']; //必需
$ comments = $ _REQUEST ['comments']; //不需要
$ security = $ _REQUEST ['security_code']; //不需要
$ email_message =表格详情如下。\ n \\ n;
函数clean_string（$ string）{
$ bad = array（content-type，bcc：，to：，cc：，href）;
返回str_replace（$ bad，，$ string）;
}
$ email_message。=名字：.clean_string（$ first_name）。\ n;
$ email_message。=电子邮件：。clean_string（$ email_from）。\ n;
$ email_message。=电话：.clean_string（$ telephone）。\ n;
$ email_message。=课程：。makean_string（$ course）。\ n;
$ email_message。=城市：.clean_string（$ city）。\ n;
$ email_message。=评论：.clean_string（$ comments）。\ n;
$ email_message。=Security_Code：。cleanantring（$ security）。\ n;
//创建电子邮件标头
$ headers ='From：'。$ email_from。\\\\ n。
'回复：'。$ email_from。\\\\ n。
'X-Mailer：PHP /'。 phpversion（）;
邮件（$ email_to，$ email_subject，$ email_message，$ headers）;
echo感谢您与我们联系。我们会尽快与您联系。;
}
else {
echo请先纠正填写查询表格;
}
？>
< br < span class =code-keyword> / > < br >
< a href = http://admissioncart.dx.am/contact-us.php > 点击此处< / a > 联系我们
< / body >
< / html >
解决方案
_REQUEST [email]）） < span class =code-summarycomment>
{
// 编辑 2 LINES BELOW AS REQUIRED
< span class =code-summarycomment>
email_to = kadian2010@gmail.com ;
email_subject = 接纳查询详细信息 ;
function 死亡（
->> i hv created a form page in php.
->> After click on the submit button it redirect to another php page(sendmail.php)
->> every time the user refresh the page after submit it send a mail every time.
Please help how we restrict to send mail after once the form submit.
The sendmail.php page is as below
<!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">
<head>
</head>
<body>
<?php
if(!empty($_REQUEST["email"]))
{
// EDIT THE 2 LINES BELOW AS REQUIRED
$email_to = "kadian2010@gmail.com";
$email_subject = "Admission query details";
function died($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 $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
// validation expected data exists
if(!isset($_REQUEST['name']) ||
!isset($_REQUEST['email']) ||
!isset($_REQUEST['phone']) ||
!isset($_REQUEST['course']) ||
!isset($_REQUEST['city']) ||
!isset($_REQUEST['comments']) ||
!isset($_REQUEST['security_code'])) {
died('We are sorry, but there appears to be a problem with the form you submitted.');
}
$first_name = $_REQUEST['name']; // required
$email_from = $_REQUEST['email']; // required
$telephone = $_REQUEST['phone']; // required
$course = $_REQUEST['course']; // required
$city = $_REQUEST['city']; // required
$comments = $_REQUEST['comments']; // not required
$security = $_REQUEST['security_code']; // not required
$email_message = "Form details below.\n\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "First Name: ".clean_string($first_name)."\n";
$email_message .= "Email: ".clean_string($email_from)."\n";
$email_message .= "Telephone: ".clean_string($telephone)."\n";
$email_message .= "Course: ".clean_string($course)."\n";
$email_message .= "City: ".clean_string($city)."\n";
$email_message .= "Comments: ".clean_string($comments)."\n";
$email_message .= "Security_Code: ".clean_string($security)."\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);
echo"Thank you for contacting us. We will be in touch with you very soon.";
}
else{
echo"Please first fill the Enquiry Form correctively";
}
?>
<br /><br>
<a href="http://admissioncart.dx.am/contact-us.php">Click here</a> to Contact Us
</body>
</html> 解决方案
_REQUEST["email"])) { // EDIT THE 2 LINES BELOW AS REQUIRED
email_to = "kadian2010@gmail.com";
email_subject = "Admission query details"; function died(
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