undefined index error

[jason1987]

I keep getting the undefined index error on the bottom two rows of my code simparent and equtype - the other two work fine yet there is no difference in my code. equtypeid is even from the same table as the top two

$equid=$HTTP_POST_VARS['equid'];
$fromuserid=$HTTP_POST_VARS['fromuserid'];
$simparent=$HTTP_POST_VARS['simparentid'];
$equtype=$HTTP_POST_VARS['equtypeid'];
 

these are then used in an if statement

if ($simparent == !'Null')
{
    if($equtype == '8')
    {
         $simins = "UPDATE itsiminfo SET simparentid=NULL WHERE itsiminfo.equid='$equid'";
         echo $simins;
        //$resultsimins = mysql_query($simins);                     // Removes link between sim card and mobile/3G - only from SIM though not via mobile or 3G
    }
 
    if($equtype == '7' || '4')
    {
        $simins2 = "UPDATE itsiminfo SET simparentid=NULL WHERE simparentid='$equid'";
        $resultsimins2 = mysql_query($simins2);                 //Removes link between Mobile/3g and sim - from through mobile or 3g
    }
}
 

anyone help??

[ak1dnar]

First you should arrange your IF blocks in a propper way. I have some doubts with your conditions:
could you please take a look at on this.

<?php
$simparent = 'Null'; // change this and check
$equtype = '4'; // change this and check
 
if($simparent != 'Null'){
echo 'match found $simparent';
}
 
echo '<br>';
 
if(($equtype == '7') || ($equtype == '4')){
echo 'match found $equtype';
}
?>