Notice problem with while loop

Posted: Fri Nov 28, 2008 3:37 pm

Any idea on how i can rewrite the below code so that when the "while loop" hits the offset in the array that does not exist, to stop the loop, it does not through a notice? (Notice: Undefined index: block_7 in /****/blocks/block-nxp_online.php on line 77)

At first I though a FOR LOOP but I don't know how to count the nxp_online_config["block_" . $block_count] because there are othe things in the array other than block_" . $block_count and thos are all I want.

Code:




$block_count = 1;





while($nxp_online_config["block_" . $block_count] != ""){


   unset($nxp_online_this_block, $nxp_online_this_perm, $block_file);


   


   $nxp_online_this_block = $nxp_online_config["block_" . $block_count];


   $nxp_online_this_perm = $nxp_online_config["block_" . $block_count . "_perm"];


   $block_file = "blocks/nxp_online/nxp_online_" . strtolower($nxp_online_this_block) . ".php";


   


   if (($nxp_online_this_block != "none" || $nxp_online_this_block != "") && file_exists($block_file))


   {


      if ($nxp_online_this_perm == "all" || $nxp_online_this_perm == "mem" && is_user($user) || $nxp_online_this_perm == "adm" && is_admin($admin))


      {


         $content .= "   <tr>\n";


         $content .= "      <td align='left' valign='middle'>\n";


                     include_once($block_file);


         $content .= "      </td>\n";


         $content .= "   </tr>\n";


      }


   }


   


   $block_count++;


}

Posted: Fri Nov 28, 2008 4:37 pm

Still don't see why you can't use a foreach loop. Just access those elements within it that you are interested in and ignore the rest, no? Either that or test for the array length.

Posted: Fri Nov 28, 2008 4:57 pm

I'd rather not loop through the entire array.

Array length is no good because there can be elements other than block_* elements.

I guess I can loop through the entire array, but anyone else have any other ideas?

registered · Posted: Sat Nov 29, 2008 1:23 am

Use an isset() check first, then you won't get the warning

Posted: Sat Nov 29, 2008 3:17 pm

Thanks, I will give that a try.