[RESOLVED] Check url for variables?

[homer09001]

i know how to get php to recover and variables stored in a page url but how can i make an if statement that check to see fi there arent any e.g.:

if($urlvariable EXISTS)
{
echo "this is the content page loaded";
}
else *IF urlvariable  DOes NOT EXIST*
{
echo $welcomemessage;
}

that what im tryng to acheive obviously i know it cant literaly be done like that but i hope that makes it clearer what im trying to do?

[bpat1434]

if( isset($_POST) )
{
    echo 'POSTed information exists!';
}
elseif( isset($_GET) )
{
    echo 'GET information exists!';
}
else
{
    echo 'No sent information, Welcome!';
}

[laserlight]

Use [man]isset/man or [man]empty/man.

[homer09001]

solved with a little bit of help from BPAT this is the code i used and it worked:

<?php
include "config.php3";
include "dbconnect.php3";
$id = $_REQUEST['pageid']; 

if( isset($id) ) 
{ 
$a = "SELECT * FROM $table1 WHERE id = $id";
$rows = mysql_query($a);

while ($b = mysql_fetch_array($rows)){

$cont = $b['content'];
}

$test = mysql_num_rows($rows);


if($test == 1)
{
echo $cont;
}
else
{
echo "Sorry but it appears this content no longer exists Sorry,<br>

Please content admin at [e-mail] stating which link you clicked on
<br>
thank you :D";
}
}
else
{
echo "wlecome content here";
}
?>

$GET and $POST didnt work so i tried $REQUEST and that didnt work so i simply tried $id which is the results of teh $REQUEST

thanks for your help guys 😃

[azsolo]

I got this to work with-

<?php

if ( isset( $_GET['var'] ) )
{
  exit ("GET data set!");
}
  elseif ( isset( $_POST['var'] ) )
{
  exit ("POST data set!");
}
  else
{
  exit ("No data set!");
}

?>