How to pass a value with the same PHP file? - php

Question

I want to pass the same boolean value "isProvena" several times in two PHP files. The first time I pass the value from utilitizer.php to hraprint.php by using the codes as follows:
if ($_POST['type'] == 'printphys' || $_POST['type'] == 'printprovenahpa')
{
echo "<form action='/content/822' method=post>";
echo "<input type=hidden name=filename value='$filename'>";
if($_POST['type'] == 'printprovenahpa') {echo "<input type=hidden name=isProvena value='1'>";}
echo "<input type=hidden name=content value='";
if ($_POST['type'] == 'printphys') echo 751;
else if ($_POST['type'] == 'printprovenahpa') echo 520;
echo "'>";
echo "<input type=submit value='Start Job'></form>";
}
And then I get the value "isProvena" from hraprint.php and post(get) again:
$isProvena = false;
extract($_REQUEST, EXTR_IF_EXISTS);
$isProvena = (boolean)$isProvena;
<form action="/content/822" method="GET">
<input type="hidden" name="isProvena" value="<?php echo ($isProvena) ? '1' : '0' ?>" />
<tr>
<td><label for="showOnlyScreening">Print Only Screenings:</label></td>
<td><input id="showOnlyScreening" type="checkbox" name="showOnlyScreening" value="1" <?php echo ($isProvena) ? 'checked="checked"' : ''?>/></td>
</tr>
<tr>
</table>
</form>
And post again:
<form action="/content/822" method="POST">
<input type="hidden" name="isProvena" value="<?php echo ($isProvena) ? '1' : '0' ?>" />
</table>
And I do the judgement here:
if($isProvena){
.........
}
The reason I need to post(get) several times is that there are several page redirect action happens in the same PHP file(hraprint.php). When I was trying to get the value which is supposed to be 'true' from if($isProvena){} and execute the function, I failed.
Anyone can help me to have a look and tell me what is wrong?

Answer 1

It would be easier if you simply use sessions for that. Sessions are made specifically for that purpose - passing variables easily from one page to another.
And it is not yet established in the last code block of your answer that $isProvena already exists because I do not see any extract() there.
P.S. Use the $_POST and $_GET variables instead of extracting the $_REQUEST. The code is vulnerable to the problems caused by register_globals