[SOLVED] Undefined index problem/argument passing.

[pjfuller]

Hello,

 

i get this following error when running the following PHP code.

 

Notice: Undefined index: page in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\page.php on line 22

 

22:   $page = $_POST["page"];

23:   

24:if(empty($page)){    // Checks if the $page variable is empty (not set)

25:        $page = 1;      // If it is empty, we're on page 1

26:    };

 

The variable page is used for pagination. Is there a way i can check to see if the variable exists with out causing the above error. This only happens the first time i run the PHP code.

 

Paul

[vbnullchar]

if(isset($_POST['page'])) {
...
}

[papaface]

cant you do:

   
if(!isset($_POST["page"])){    // Checks if the $page variable is empty (not set)
      $page = 1;      // If it is empty, we're on page 1
   }
else
   {
$page = $_POST["page"];
    }

[pjfuller]

  Quote

cant you do:

   
if(!isset($_POST["page"])){    // Checks if the $page variable is empty (not set)
      $page = 1;      // If it is empty, we're on page 1
   }
else
   {
$page = $_POST["page"];
    }

 

I've tried mine own and no success?.. The error message has gone away, but the condition is always false. Maybe scope of the variable declaration? Any more ideas?..

 

if(isset($_POST["page"]))    // Checks if the $page variable is empty (not set)
{
echo "true";
echo $_POST["page"];
$page = $_POST["page"];
}
else
{
  echo "false"; 
  $page = 1;
}   

[allenskd]

  Quote

  Quote

cant you do:

   
if(!isset($_POST["page"])){    // Checks if the $page variable is empty (not set)
      $page = 1;      // If it is empty, we're on page 1
   }
else
   {
$page = $_POST["page"];
    }

 

I've tried mine own and no success?.. The error message has gone away, but the condition is always false. Maybe scope of the variable declaration? Any more ideas?..

 

if(isset($_POST["page"]))    // Checks if the $page variable is empty (not set)
{
echo "true";
echo $_POST["page"];
$page = $_POST["page"];
}
else
{
  echo "false"; 
  $page = 1;
}   

 

The $_POST['page'] is also when you submit data (web forms) <input type="text" name="page" value="whatever" /> (with a form directing the script that is taking care of the "being posted" information

 

I think you are looking for $_GET["page"] which gets the request (like http://localhost/index.php?page=VALUE

 

[pjfuller]

This works

if(isset($_GET["page"])){    // Checks if the $page variable is empty (not set)
$page = $_GET["page"];
   };

   if(empty($page)){    // Checks if the $page variable is empty (not set)
        $page = 1;      // If it is empty, we're on page 1
    }; 

 

:D :D

 

Thanks

[br0ken]

<?php

error_reporting(E_ALL ^ E_NOTICE);

?>

 

Put this at the top of your page to turn off notice errors.