[PHP] isset bug?

2003-08-22 Thread Christian Calloway 
Ok, here's the deal. I like to use $_GET and $_POST variables without values
to notify my scripts that some action must be taken. For example, given the
following URL:

http://blahdomain/blah.php?productid=1edit

or given the following form element:

input type=hidden name=edit

My blah.php script will check if edit set using the following line:

if (isset($_REQUEST[edit]))
{
..
}

and then it will take the appropriate actions (lets just say its updating a
record in the database). Locally I am running PHPv4.3.2, and everything
works fine. I have been working on a large web-based application for the
last month, and yesterday I put it up live. Our host unfortunately runs
PHPv4.2.1 and I have no access to the conf files (those bastards) and
globals are set to on. Low and behold, the isset function returns false when
a $_POST or $_GET variable is passed but contains no value, which would be
exactly the same thing as checking the variable itself:

if ($_REQUEST[edit]) { }

What I want and needed to do was check for the existance of the variable,
not whether it has a value. So is this a bug, a feature or just some random
happening? Thank guys

PHP ROCKS



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Re: [PHP] isset bug?

2003-08-22 Thread Curt Zirzow 
* Thus wrote Christian Calloway ([EMAIL PROTECTED]):
 Ok, here's the deal. I like to use $_GET and $_POST variables without values
 to notify my scripts that some action must be taken. For example, given the
 following URL:
 
 http://blahdomain/blah.php?productid=1edit
 
 or given the following form element:
 
 input type=hidden name=edit

simply add a value=1 and it will fix your problem.

 
 My blah.php script will check if edit set using the following line:
 
 if (isset($_REQUEST[edit]))
 {
 ..
 }
 
 and then it will take the appropriate actions (lets just say its updating a
 record in the database). Locally I am running PHPv4.3.2, and everything
 works fine. I have been working on a large web-based application for the
 last month, and yesterday I put it up live. Our host unfortunately runs
 PHPv4.2.1 and I have no access to the conf files (those bastards) and
 globals are set to on. Low and behold, the isset function returns false when
 a $_POST or $_GET variable is passed but contains no value, which would be
 exactly the same thing as checking the variable itself:
 


Curt
-- 
I used to think I was indecisive, but now I'm not so sure.

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Re: [PHP] isset bug?

2003-08-22 Thread Christian Calloway 
What I was trying to avoid is exactly that. It would require changing links
and hidden fields throughout the entire application, which would take hours
to track down. I am looking for a nice lazy and easy fix.


Curt Zirzow [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
 * Thus wrote Christian Calloway ([EMAIL PROTECTED]):
  Ok, here's the deal. I like to use $_GET and $_POST variables without
values
  to notify my scripts that some action must be taken. For example, given
the
  following URL:
 
  http://blahdomain/blah.php?productid=1edit
 
  or given the following form element:
 
  input type=hidden name=edit

 simply add a value=1 and it will fix your problem.

 
  My blah.php script will check if edit set using the following line:
 
  if (isset($_REQUEST[edit]))
  {
  ..
  }
 
  and then it will take the appropriate actions (lets just say its
updating a
  record in the database). Locally I am running PHPv4.3.2, and everything
  works fine. I have been working on a large web-based application for the
  last month, and yesterday I put it up live. Our host unfortunately runs
  PHPv4.2.1 and I have no access to the conf files (those bastards) and
  globals are set to on. Low and behold, the isset function returns false
when
  a $_POST or $_GET variable is passed but contains no value, which would
be
  exactly the same thing as checking the variable itself:
 


 Curt
 -- 
 I used to think I was indecisive, but now I'm not so sure.



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Re: [PHP] isset bug?

2003-08-22 Thread Robert Cummings 
This should help:

http://www.php.net/manual/en/function.array-key-exists.php

Cheers,
Rob.


On Fri, 2003-08-22 at 13:26, Curt Zirzow wrote:
 * Thus wrote Christian Calloway ([EMAIL PROTECTED]):
  Ok, here's the deal. I like to use $_GET and $_POST variables without values
  to notify my scripts that some action must be taken. For example, given the
  following URL:
  
  http://blahdomain/blah.php?productid=1edit
  
  or given the following form element:
  
  input type=hidden name=edit
 
 simply add a value=1 and it will fix your problem.
 
  
  My blah.php script will check if edit set using the following line:
  
  if (isset($_REQUEST[edit]))
  {
  ..
  }
  
  and then it will take the appropriate actions (lets just say its updating a
  record in the database). Locally I am running PHPv4.3.2, and everything
  works fine. I have been working on a large web-based application for the
  last month, and yesterday I put it up live. Our host unfortunately runs
  PHPv4.2.1 and I have no access to the conf files (those bastards) and
  globals are set to on. Low and behold, the isset function returns false when
  a $_POST or $_GET variable is passed but contains no value, which would be
  exactly the same thing as checking the variable itself:
  
 
 
 Curt
 -- 
 I used to think I was indecisive, but now I'm not so sure.
 
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 PHP General Mailing List (http://www.php.net/)
 To unsubscribe, visit: http://www.php.net/unsub.php
 
 
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