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Thread: [PHP] usort

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  1. #1
    Join Date
    Nov 2009
    Posts
    31

    [PHP] usort

    I'm getting Warning: usort() [function.usort]: Invalid comparison function

    Which points to

    PHP Code:
    if ($sort == "artist"usort($artistarray"cmp_artist"); 
    $artistarry is an array of objects which contain cmp_artist()

    PHP Code:
    static function cmp_artist($a$b)
    {
       
    $tmp strcasecmp($a->get_artist(),$b->get_artist());
       if (
    $tmp)
       {
          return 
    $tmp;
       }
       else
       {
          if(
    $a->get_multiple() == $b->get_multiple()  ) return "0";
          if (
    $a->get_multiple() < $b->get_multiple() ) 
          { 
    $tmp "-1"; }
          else
          { 
    $tmp "1";}
          return 
    $tmp;
       }

    It is meant to sort the array by the artists name alphabetically, and if the artist appearance more than once the sort it them numerically based on it's multiple count. (the array is created in appearance order)
    Last edited by Roguebfl; December 1st, 2009 at 03:35 AM. Reason: correcting the sign of the test

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