Transfer ID to 3rd page

[spacepoet]

Hi:

 

How do I transfer an ID to a 3rd page.

 

Meaning:

Events.php

... 
<a href="eventDetails.php?calID=<?=$row['calID'];?>"><?=$row['calName'];?></a>
...

 

Goes to eventDetails.php, and transfer/displays the calID properly:

<?php
include('include/myConn.php');
include('include/myNav.php');

$calID = $_REQUEST['calID'];

$query=mysql_query("select * from calTbl where calID = $calID") or die("Could not get data from db: ".mysql_error());

while($result=mysql_fetch_array($query))
{
$calName=$result['calName'];
$calDesc=$result['calDesc'];
$calDate=$result['calDate'];
$calID=$result['calID'];
}
?>

...
<a href="?calID=<?php echo $calID; ?>" onclick="openSesame();" class="myBold">Print</a>
...

 

However, when I click the "Print" link (I see it is properly writing the calID on the link - like eventDetailsPrint.php?calID=7. The "eventDetailsPrint.php" is written from a JavaScript file as a new window function), it is coming up blank.

<?php
include('include/myConn.php');
//$calID = $_REQUEST['calID'];
//$calID = $_SERVER['calID'];
//$calID = echo $_GET['calID'];
echo $_POST["calID"];

$query=mysql_query("select * from calTbl where calID = calID") or die("Could not get data from db: ".mysql_error());

while($result=mysql_fetch_array($query))
{
$calName=$result['calName'];
$calDesc=$result['calDesc'];
$calDate=$result['calDate'];
$calID=$result['calID'];
}

?>

...
<?php echo $calID; ?>
...

 

What is the trick to pass an ID from page to page to page?

 

Thanks.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Fadion]

In the first code you've used $_REQUEST to get the ID, while in the second one, $_POST. A brief explanation of various superglobals:

 

$_GET => Handles url variables. For ex in: eventDetails.php?calID=10, "calID" is a url variable with value "10". It would be accessed by: $_GET['calID'].

$_POST => Handles form data. You can't access any actual property without submitting a form first. Not use in your case.

$_REQUEST => Handles $_GET, $_POST and $_COOKIE (cookies) data. Don't ever use it! It's a bad programming practice and can create security issues.

 

So, in you case you will need $_GET to access the url variable.

 

In the first script, replace:

$calID = $_REQUEST['calID'];

 

with:

$calID = $_GET['calID'];

 

While in the second one, replace:

echo $_POST["calID"]

 

with:

$calID = $_GET['calID'];
echo $calID; //just to confirm the variable has the correct value