user2267486 user2267486 - 22 days ago 5
HTML Question

Blank page on submit button

I have some troubles with my html page. I want it to reload after pressing the submit button. I tried reloading it with javascript but it keeps on giving me a white page (after saving the data I need in a file).

Here is the html code:

<html>
<head>
<title>Sample Web Form</title>
</head>
<body>

<h1>Fill Out This Form</h1>


<form action="myprocessingscript.php" method="POST">
<p><i>Choose one or more of the available options that represent the current mental state of the System:</i></p>
<input type="checkbox" name="mentalState[]" value="Knows user culture"> Knows User Culture<br>
<input type="checkbox" name="mentalState[]" value="Knows concept "> Knows Concept<br>
<input type="checkbox" name="mentalState[]" value="Knows that user knows concept"> Knows that User Knows Concept<br>


<p><i>Choose the corresponding action:</i></p>
<input type="checkbox" name="action" value="cultureIdentif"> Culture Identification<br>
<input type="checkbox" name="action" value="conceptIdentif"> Concept Identification<br>


<p><i>Choose one or more of the available options that represent the current mental state of the System following the action:</i></p>

<input type="checkbox" name="mentalState2[]" value="Knows user culture"> Knows User Culture<br>
<input type="checkbox" name="mentalState2[]" value="Knows concept"> Knows Concept<br>
<input type="checkbox" name="mentalState2[]" value="Knows that user knows concept"> Knows that User Knows Concept<br>
</br>

<input type="submit" value="Save Data">

</form>
</body>
</html>


here is the php code:

<?php


if(!empty($_POST['mentalState'])){
// Loop to store and display values of individual checked checkbox.
foreach($_POST['mentalState'] as $mentalState)
($mentalState1=$mentalState . ',' . $mentalState1);
}

if(!empty($_POST['mentalState2'])){
// Loop to store and display values of individual checked checkbox.
foreach($_POST['mentalState2'] as $mentalState)
($mentalState2=$mentalState . ',' . $mentalState2);
}


if(isset($mentalState1) && isset($_POST['action']) && isset($mentalState2)) {
$data = $mentalState1 . '-' . $_POST['action'] . '-' . $mentalState2 . "\n";
$ret = file_put_contents('matrix.txt', $data, FILE_APPEND | LOCK_EX);
if($ret === false) {
die('There was an error writing this file');
}

} else {
die('no post data to process');
}


Thanks for your help!

Answer

I think you are missing one condition here

you have only

if($ret === false) {
    die('There was an error writing this file');
}

try to add the else and see

if($ret === false) {
    die('There was an error writing this file');
} else {
  header('Location: ' . $_SERVER['HTTP_REFERER']);
}