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[thejuan]

Greetings!!!!

I currently install MySQL for win98(WinMySQLAdmin 1.2) and PHP on my windows98 with PWS running.

I'm now on the basic of building PHP and MySQL.

I encounter this error on the basic PHP codes I have:

Warning: Undefined variable: searchstring in C:\Inetpub\wwwroot\search.php3 on line 3
HERE is the code::

<?php
if ($searchstring)
{
$sql="SELECT * FROM personnel WHERE $searchtype LIKE '%$searchstring%' ORDER BY firstname ASC";
$db = mysql_connect("localhost", "root", "");
mysql_select_db("learndb",$db);

Hope you can help me.

[[deleted]]

You are trying to use a variable that was never used before. PHP doen't like that.

Don't check for vars using just IF().
Instead, use isset():

if (isset($searchstring))
{
// $searchstring was 'set', so it can be used
}
else
{
// $searchstring was never used before
};