Pfthb

Good day experts!

I am stuck on a problem.
This is my function.php

 function tbl_questions() 
 global $mysqlhost, $mysqluser, $mysqlpwd, $mysqldb;



$connection=mysqli_connect($mysqlhost, $mysqluser, $mysqlpwd) or die ("Verbindungsversuch fehlgeschlagen");
 mysqli_select_db($connection, $mysqldb) or die("Konnte die Datenbank nicht waehlen.");
 $sql_tbl_questions = "SELECT * FROM `questions` where istAktiv='1'";
 $quest_query = mysqli_query($connection, $sql_tbl_questions) or die("Anfrage nicht erfolgreich");

 $i = 0;

 while ($question = mysqli_fetch_array($quest_query)) 
 $i++;
 echo '<tr>';
 echo '<th>'.$i.'</th>';
 echo '<th>'.$question['question'].'</th>';
 echo '<th class="text-center"><input type="radio" name="'.$question['dimension'].'_question_'.$question['id'].'" value="0" required></th>';
 echo '<th class="text-center"><input type="radio" name="'.$question['dimension'].'_question_'.$question['id'].'" value="2.5"></th>';
 echo '<th class="text-center"><input type="radio" name="'.$question['dimension'].'_question_'.$question['id'].'" value="5"></th>';
 echo '<th class="text-center"><input type="radio" name="'.$question['dimension'].'_question_'.$question['id'].'" value="7.5"></th>';
 echo '<th class="text-center"><input type="radio" name="'.$question['dimension'].'_question_'.$question['id'].'" value="10"></th>';
 echo '</tr>';
 $dimensions = $question['dimension'];
 
 echo '<tr>';
 echo '<th></th>';
 echo '<th>Kommentar/Ihre Anmerkung</th>';
 echo '<th class="text-center" colspan=5><textarea rows=3 cols=50 name="Kommentar"></textarea></th>';
 echo '</tr>';

 echo '<input type="hidden" name="gesamt" value="'.$i.'">';
 echo '<input type="hidden" name="dimensions" value="'.$dimensions.'">';
 echo '<input type="hidden" name="size" value="'.$_POST['size'].'">'; 
 echo '<input type="hidden" name="branche" value="'.$_POST['branche'].'">';
 //echo $_POST['size'];
 //echo $_POST['branche']; 
 `

That function.php is saving data from an questionaire which is containing values.
My problem is as easy as complex. I am moving through this questionaire through an javascript:

function senden(goBack)

	if(goBack==0)
	
		document.getElementById('page').value++;
		if(	document.getElementById('page').value >9)
			document.getElementById('submitForm').action='auswertung.php';
			
		
		document.getElementById('submitForm').submit();
	
	else
	
		document.getElementById('page').value--;
		if(	document.getElementById('page').value <1)
			document.getElementById('submitForm').action='branche.php';
			
		
		document.getElementById('submitForm').submit();
	

And of course some html for the buttons:

 <input type="hidden" id="page" name="page" value="<?php echo $page; ?>" />
 <button type="button" id="doubleButtons" class="btn btn-default" onclick="senden(1)">Zurück</button>
 <button type="button" id="doubleButtons" class="btn btn-default" onclick="senden(0)"><?php echo $page==9?"FDC Auswerten":"Weiter";?></button>

The questionnaire got those radio buttons which i am talking about, a button for next and a button for back.

My problem is : If i am filling my questionnaire and press the back button, the filled stuff is gone!
So my idea was to save everything into an array, but can you give me a hint how i have to do it?

I hope my question is quite clear, if not, please excuse me and let me know!

try using history.back function?

<button onclick="history.back()">Back</button>