Re: regular expression help

[Jason <jason.gerfen@xxxxxxxxxxxx>]

Jason wrote:
> Simple functions to check & fix if necessary invalid formating of a MAC 
> address... I seem to be having problems with the global variable $mac 
> not being returned from the fix_mac() function.  Any help is appreciated.
>
> <?php
> /*
>  * ex. 00:AA:11:BB:22:CC
>  */
> function chk_mac( $mac ) {
    global $mac;
>  if( eregi( 
> "^[0-9A-Fa-f]{2}\:[0-9A-Fa-f]{2}\:[0-9A-Fa-f]{2}\:[0-9A-Fa-f]{2}\:[0-9A-Fa-f]{2}\:[0-9A-Fa-f]{2}$", 
> $mac ) ) {
>   return 0;
>  } else {
>   return 1;
>  }
> }
>
> /*
>  * check validity of MAC & do replacements if necessary
>  */
> function fix_mac( $mac ) {
>  global $mac;
>  /* strip the dash & replace with a colon */
>  if( eregi( 
> "^[0-9A-Fa-f]{2}\-[0-9A-Fa-f]{2}\-[0-9A-Fa-f]{2}\-[0-9A-Fa-f]{2}\-[0-9A-Fa-f]{2}\-[0-9A-Fa-f]{2}$", 
> $mac ) ) {
>   $mac = preg_replace( "/\-/", ":", $mac );
>   return $mac;
>  }
>  /* add a colon for every two characters */
>  if( eregi( "^[0-9A-Fa-f]{12}$", $mac ) ) {
>   /* split up the MAC and assign new var names */
>   @list( $mac1, $mac2, $mac3, $mac4, $mac5, $mac6 ) = @str_split( $mac, 
> 2 );
>   /* put it back together with the required colons */
>   $mac = $mac1 . ":" . $mac2 . ":" . $mac3 . ":" . $mac4 . ":" . $mac5 . 
> ":" . $mac6;
>   return $mac;
>  }
> }
>
> // do our checks to make sure we are using these damn things right
> $mac1 = "00aa11bb22cc";
> $mac2 = "00-aa-11-bb-22-cc";
> $mac3 = "00:aa:11:bb:22:cc";
>
> // make sure it is global
> global $mac;
>
> // if mac submitted is invalid check & fix if necessary
> if( chk_mac( $mac1 ) != 0 ) {
>  $mac = fix_mac( $mac1 ); echo $mac1 . " converted to " . $mac . "<br>";
> }
> if( chk_mac( $mac2 ) != 0 ) {
>  $mac = fix_mac( $mac2 ); echo $mac2 . " converted to " . $mac . "<br>";
> }
> if( chk_mac( $mac3 ) != 0 ) {
>  $mac = fix_mac( $mac3 ); echo $mac3 . " converted to " . $mac . "<br>";
> }
>
> ?>
Still does not resolve the problem.  declaring $mac as global in the 
chk_mac() function.

--
Jason Gerfen
Student Computing
Marriott Library
801.585.9810
jason.gerfen@xxxxxxxxxxxx

"And remember... If the ladies
 don't find you handsome, they
 should at least find you handy..."
             ~The Red Green show

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php