RE: [PHP] Bitwise solution?

[Boget, Chris]

> > I have 2 values.  The first is a constant while the second is not.
> Is the first value a numerical value (real/integer?) or a 
> string value?

String.

This is what I've come up with and it seems to work pretty ok.
What do you guys think?

(test code to illustrate a point; other than the XORing, not 
what I'm actually going to do with the "live" code)

<script language="php">

    $uniqueArray = array();
    for( $i = 0; $i <= 100; $i++ ) {
        $certnum = date( "U" );  // what the second variable is always set
to
                
        if( $certnum == $lastCertNum ) {
            sleep( 1 );
                        
        }
                
        $uid = ( $uid == "nsa000" ) ? "mdb000" : "nsa000";  // sample first
variable
                
        $uniqueNum = ( hexdec( $uid ) ^ $certnum );
                
        echo "$uid ^ $certnum = $uniqueNum<br>\n";
        if( in_array( $uniqueNum, $uniqueArray )) {
            echo "Not a unique number!<br><br>\n";
                        
        }
                
        $uniqueArray[] = $uniqueNum;
        
        flush();
                
        $lastCertNum = $certnum;
                
    }

</script>



Chris