spacepoet Posted April 25, 2011 Share Posted April 25, 2011 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. Quote Link to comment Share on other sites More sharing options...
Fadion Posted April 25, 2011 Share Posted April 25, 2011 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 Quote Link to comment Share on other sites More sharing options...
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