HTML form disapearing after Error/Email is sent (PHP) - php

Question

weird problem here, my html form disapears from the page when I click the send button regardless of success or not.
I display an alert box to indicate if the email was sent or not.
here is the code
<?php
$action = $_REQUEST['action'];
if ($action == "") /* display the contact form */ {
?>
<form action="" method="POST" enctype="multipart/form-data">
<input type="hidden" name="action" value="submit">
<input class="champTextFormulaire" placeholder="Votre Nom" name="name" type="text" value="" size="30"/><br>
<input class="champTextFormulaire" placeholder="Votre email" name="email" type="text" value="" size="30"/><br>
<textarea id="champMessage" placeholder="Votre Message..." name="message" rows="7" cols="30"></textarea><br>
<input class="btnEnvoiFormulaire" type="submit" value="Envoi"/>
</form>
<?php
} else /* send the submitted data */ {
$name = $_REQUEST['name'];
$email = $_REQUEST['email'];
$message = $_REQUEST['message'];
if (($name == "") || ($email == "") || ($message == "")) {
print '<script type="text/javascript">';
print 'alert("Veuillez remplir tout les champs")';
print '</script>';
} else {
$from = "From: $name<$email>\r\nReturn-path: $email";
$subject = "Message sent using your contact form";
mail(desiletsmathieu#gmail.com", $subject, $message, $from);
print '<script type="text/javascript">';
print 'alert("Mail envoyé")';
print '</script>';
}
}
}
?>

Answer 1

This is happening because you are using $_REQUEST['action']
After your are submitting the form, your hidden field action becomes $_REQUEST['action'];
And after you submit the form, you get $action = $_REQUEST['action']; to be submit.
Where as you should have a blank value for $_REQUEST['action'] to display the form.
Solution:
1) Either, modify if ($action == "submit")
2) Or, assign blank value to the action (hidden) field

Answer 2

Try it this way.
First off, you forgot a double quote just after mail( that read like this:
mail(desiletsmathieu#gmail.com", $subject, $message, $from);
and needed to be changed to:
mail("desiletsmathieu#gmail.com", $subject, $message, $from);
Plus enctype="multipart/form-data" is for file attachments/uploading so you don't need that.
I also removed this line, which was no longer required:
<input type="hidden" name="action" value="submit">
This works and tested:
Note: I added a name to your submit button in order to give it an extra condition. Plus, you basically had your conditions already set, it just needed to be reworked/rethinked and using less code to achieve the same result.
<form action="" method="POST">
<input class="champTextFormulaire" placeholder="Votre Nom" name="name" type="text" value="" size="30"/><br>
<input class="champTextFormulaire" placeholder="Votre email" name="email" type="text" value="" size="30"/><br>
<textarea id="champMessage" placeholder="Votre Message..." name="message" rows="7" cols="30"></textarea><br>
<input class="btnEnvoiFormulaire" type="submit" name="submit" value="Envoi"/>
</form>
<?php
$name=$_REQUEST['name'];
$email=$_REQUEST['email'];
$message=$_REQUEST['message'];
if (isset($_POST['submit'])) {
if (($name=="")||($email=="")||($message==""))
{
print '<script type="text/javascript">';
print 'alert("Veuillez remplir tout les champs")';
print '</script>';
exit;
}
else
{
$from="From: $name<$email>\r\nReturn-path: $email";
$subject="Message sent using your contact form";
mail("desiletsmathieu#gmail.com", $subject, $message, $from);
print '<script type="text/javascript">';
print 'alert("Mail envoyé")';
print '</script>';
exit;
}
}
?>