Nuwan
Sep 13 2007, 09:47 AM
| | Hey Guys..
I'm using PHP to develop a small login module. I need to forward the user to a new page if the user has entered a valid user name and password. I submit the form to the same page which has the login form, and does the validations there. I do not know how to forward the user to another page by checking a certain condition in php. Please be kind enough to help me out here. Thanks in advance, Nuwan. |
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dserban
Sep 13 2007, 10:43 AM
I think you just output a JavaScript tag with instructions for the redirection if the condition is met. If the condition isn't met, the script tag simply won't exist, and therefore the redirect won't happen. BTW, your topic belongs in the PHP forum.
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vujsa
Sep 13 2007, 11:48 AM
What you need here is the header function. Like so: CODE <? php if($_POST['username'] == 'Nuwan'){ header('Location: http://www.example.com/authorized.php'); } else{ header('Location: http://www.example.com/login.php'); } ?> Of course, you'll need a way to compare your username and password to a database or list of users but you didn't ask that question so I'll assume for now that you either don't need it yet or have already figured that out. Hope this helps.  vujsa
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Nuwan
Sep 14 2007, 02:55 AM
Hey Guys.. Thanks for all the help. I got it working now, by using header ('Location : url');. Ya i got the database stuff figured out. Thanks, Nuwan.
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pyost
Sep 14 2007, 08:32 AM
It is only a matter of time until you receive an error message saying "Headers already sent" - this will, of course, disallow you to redirect the user to another page. This is because you have already outputted some data to the page. If you ever encounter this problem, and you can't avoid it, you will have to use JavaScript. CODE <script type="text/javascript"> window.location = "Redirection URL"; </script> As this can be used anywhere in the page, it is more convenient, but header() is always a better option
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galexcd
Sep 14 2007, 04:36 PM
Using javascript the redirect a page is the worst way ever! If you have to do something in the actual code php spits out why not just use meta tag to redirect?
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pyost
Sep 14 2007, 05:46 PM
Because it would have to be located between the HEAD tags  As I already said, it's JavaScript you have to use if the redirect is to occur after displaying some text on the page. If you didn't start the BODY tag yet (and therefore can use the META redirect), you can probably rewrite your code to use header() instead.
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jlhaslip
Sep 17 2007, 08:48 PM
QUOTE(pyost @ Sep 14 2007, 02:32 AM)  It is only a matter of time until you receive an error message saying "Headers already sent" - this will, of course, disallow you to redirect the user to another page. This is because you have already outputted some data to the page. If you ever encounter this problem, and you can't avoid it, you will have to use JavaScript. CODE <script type="text/javascript"> window.location = "Redirection URL"; </script> As this can be used anywhere in the page, it is more convenient, but header() is always a better option  Or learn how to use ob_start(), and the associated functions. QUOTE This function will turn output buffering on. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer.
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