lib/tags/firstof.php

   1 <?php
   2
   3 class FirstOf_Tag
   4 {
   5     /**
   6      *  firstof tag
   7      *
   8      */
   9     function generator($cmp, $args)
  10     {
  11         $texpr = array();
  12         foreach ($args as $var) {
  13             if ($cmp->is_string($var)) {
  14                 $texpr[] = $var;
  15                 break;
  16             }
  17             $texpr[] = $cmp->expr_cond(
  18                 $cmp->expr_exec('empty', $var),
  19                 "",
  20                 $var
  21             );
  22         }
  23         $texpr = array_reverse($texpr);
  24         for ($i=1; $i < count($texpr); $i++) {
  25            $texpr[$i]['true'] = $texpr[$i-1];
  26         }
  27         return $texpr[$i-1];
  28     }
  29 }