Driving me bonkers (simple PHP)

noswad · 05-22-2006, 06:59 PM

Hello.

Is it possible to take the end of a link e.g. .com/?id=123 and insert the '123' into the into a field of a registration page using PHP so I can log which users have referred others.

Thanks.

xemiterx · 05-23-2006, 09:37 AM

It is both possible and easy. If you had x.com/page.php?id=xx and

PHP Code:

  echo '<input type=hidden name=id value=' . $_GET['id'] . '>';

somewhere on page.php then you would have a hidden form element containing the id of the referer.

noswad · 05-23-2006, 04:25 PM

Thanks v much!

noswad · 05-25-2006, 08:44 PM

Hi

I got this working at first by changing the code a little bit but for some reason I can't get it to work any more.

Could anyone help me please? Its driving me nuts.

David

P.S. The field doesn't have to be hidden although I would prefer it to be

**Eric** · 05-25-2006, 09:12 PM

Merged your threads

Really isn't that hard either.. and would suggest the same as xemiterx.

PHP Code:

  <?php

 
$id = intval($_GET['id']);

 
echo '<input type="hidden" name="id" value="' . $id . '">';  

 
?>

What did you change? ^^ Should work just fine.

noswad · 05-26-2006, 04:32 AM

Excellent thanks. One little problem though -

If register.php?id=[text] the form is submitting '0' but if the id=[numbers] it's submitting correctly.

Any clues?

Thanks again

**Eric** · 05-26-2006, 10:26 AM

Ok, I was assuming the 'id' was just numerical, well, you could do the following:

PHP Code:

  <?php

 
$id = trim($_GET['id']);

 
if(preg_match("/([^a-z0-9]+)/i", $id))

{

    die('Invalid ID');

}

 
echo '<input type="hidden" name="id" value="' . $id . '">';  

 
?>

noswad · 05-26-2006, 12:58 PM

Thanks v much. V grateful.

05-22-2006, 06:59 PM	#1 (permalink)
noswad NamePros Regular Join Date: Aug 2005 Location: Leeds, UK Posts: 260 70.00 NP$ (Donate)	Driving me bonkers (simple PHP) Hello. Is it possible to take the end of a link e.g. .com/?id=123 and insert the '123' into the into a field of a registration page using PHP so I can log which users have referred others. Thanks. __________________ C905 - Sony Ericsson mobile phone with an 8 megapixel camera! Last edited by noswad; 05-25-2006 at 09:08 PM.

05-23-2006, 09:37 AM	#2 (permalink)
xemiterx NamePros Member Join Date: Dec 2003 Location: Oregon Posts: 110 203.25 NP$ (Donate)	It is both possible and easy. If you had x.com/page.php?id=xx and PHP Code: `echo '<input type=hidden name=id value=' . $_GET['id'] . '>';` somewhere on page.php then you would have a hidden form element containing the id of the referer. __________________ Play Pac Man Boxhead Rooms Boxhead 2 Futoshiki Thing Thing 3

05-23-2006, 04:25 PM	#3 (permalink)
noswad NamePros Regular Join Date: Aug 2005 Location: Leeds, UK Posts: 260 70.00 NP$ (Donate)	Thanks v much! __________________ C905 - Sony Ericsson mobile phone with an 8 megapixel camera!

05-25-2006, 08:44 PM	#4 (permalink)
noswad NamePros Regular Join Date: Aug 2005 Location: Leeds, UK Posts: 260 70.00 NP$ (Donate)	Hi I got this working at first by changing the code a little bit but for some reason I can't get it to work any more. Could anyone help me please? Its driving me nuts. David P.S. The field doesn't have to be hidden although I would prefer it to be __________________ C905 - Sony Ericsson mobile phone with an 8 megapixel camera! Last edited by noswad; 05-25-2006 at 08:53 PM.

05-25-2006, 09:12 PM	#5 (permalink)
Eric NPQ's PA, Slave, and On Call Coder Technical Services Join Date: Mar 2005 Posts: 4,545 0.71 NP$ (Donate)	Merged your threads Really isn't that hard either.. and would suggest the same as xemiterx. PHP Code: `<?php $id = intval($_GET['id']); echo '<input type="hidden" name="id" value="' . $id . '">'; ?>` What did you change? ^^ Should work just fine. __________________

05-26-2006, 04:32 AM	#6 (permalink)
noswad NamePros Regular Join Date: Aug 2005 Location: Leeds, UK Posts: 260 70.00 NP$ (Donate)	Excellent thanks. One little problem though - If register.php?id=[text] the form is submitting '0' but if the id=[numbers] it's submitting correctly. Any clues? Thanks again __________________ C905 - Sony Ericsson mobile phone with an 8 megapixel camera! Last edited by noswad; 05-26-2006 at 04:40 AM.

05-26-2006, 10:26 AM	#7 (permalink)
Eric NPQ's PA, Slave, and On Call Coder Technical Services Join Date: Mar 2005 Posts: 4,545 0.71 NP$ (Donate)	Ok, I was assuming the 'id' was just numerical, well, you could do the following: PHP Code: `<?php $id = trim($_GET['id']); if(preg_match("/([^a-z0-9]+)/i", $id)) { die('Invalid ID'); } echo '<input type="hidden" name="id" value="' . $id . '">'; ?>` __________________

05-26-2006, 12:58 PM	#8 (permalink)
noswad NamePros Regular Join Date: Aug 2005 Location: Leeds, UK Posts: 260 70.00 NP$ (Donate)	Thanks v much. V grateful. __________________ C905 - Sony Ericsson mobile phone with an 8 megapixel camera!

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