PHP script in form submit button
Question
I am more than new and tried a lot but can't get it to work.
I need to have a check for internet-connection when the submit button is clicked. If there is Internet-connection the email must be send, if not I need a message to appear that says: "No internet-connection please try again later".
Here the code for the form:
<?php header('Content-type: text/html; charset=iso8859-15');
$your_email = '????@????.com'; session_start(); $errors = '';
$firstname = ' '; $lastname = ''; $visitor_email = '';
if (isset($_POST['submit'])) {
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$visitor_email = $_POST['email'];
if (empty($firstname) || empty($lastname) {
$errors .= "\n
firstname and lastname are required fields. ";
}
if (empty($errors)) {
$to = $your_email;
$subject = "test";
$from = $your_email;
$body = "test\n" . "Firstname:
$firstname\n" . "Lastname: $lastname \n" . $headers = "Reply-To:
$visitor_email \r\n";
mail($to, $subject, $body, $headers);
header('Location: thankyou.html');
}
} ?>
<html>
<head>
<script language="JavaScript"
src="scripts/gen_validatorv31.js" type="text/javascript"></script>
</head>
<body>
<?php if (!empty($errors)) {
echo "<p class='err'>" . nl2br($errors) . "</p>";
} ?>
<div
id='contact_form_errorloc' class='err'></div>
<form method="POST"
name="booktransfer" action="<?php echo
htmlentities($_SERVER['PHP_SELF']); ?>"><label
for='firstname'>Firstname:</label> <input type="text"
name="firstname" value='<?php echo htmlentities($firstname) ?>'>
<br><label for='lastname'>Lastname:</label> <input type="text" name="lastname"
value='<?php echo htmlentities($lastname) ?>'>
<br><label for='email'>Email:</label> <input type="text"
name="email" value='<?php echo htmlentities($visitor_email) ?>'>
<input type="submit" value="Senden" name='submit'>
</form>
</body> </html>
And here the script for checking the Internet-connection:
<script>
function doesConnectionExist() {
var xhr = new XMLHttpRequest();
var file = "http://www.?????.com/somefile.png";
var randomNum =
Math.round(Math.random() * 10000);
xhr.open('HEAD', file +
"?rand=" + randomNum, false);
try {
xhr.send();
if (xhr.status >= 200 && xhr.status < 304) {
return true;
} else {
return false;
}
} catch (e) {
return false;
}
} </script>
I really hope somebody can "tie" these 2 together.
.
1 answers
solution1
1 2016-03-28 16:09:01
Well, if your script is working you can use the below:
<form method="POST"
name="booktransfer" action="<?php echo
htmlentities($_SERVER['PHP_SELF']); ?>" onsubmit="doesConnectionExist()">
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.