class.rFastTemplate.php（三）

   //
   // Description
   //    Perform substitution on the template.  We do not really recurse
   //    downward in the sense that we do not do subsitutions on inferior
   //    templates.  For each inferior template which is a part of this
   //    template, we insert the current value of their results.
   //
   // Notes
   //    Do I want to make this return a reference?
   function subst ($handle, $tag, $autoload = true) {
      $append = false;
      $debug = $this->DEBUGALL || $this->DEBUG[''subst''];
      $this->LAST = $handle;

      if ($debug)
         $this->logwrite ("subst (handle=$handle, tag=$tag, autoload=$autoload)");

      // For compatibility with FastTemplate, the results need to overwrite
      // for an array.  This really only seems to be useful in the case of
      // something like
      //     $t->parse (''MAIN'', array (''array'', ''main''));
      // Where the ''main'' template has a variable named MAIN which will be
      // set on the first pass (i.e., when parasing ''array'') and used on the
      // second pass (i.e., when parsing ''main'').
      if (gettype($tag) == ''array'') {
         foreach (array_values($tag) as $t) {
           &

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