   #PHP Manual YAZ functions yaz_ccl_conf yaz_close

   PHP Manual
   Prev  Next
   ______________________________________________________________________

                                 yaz_ccl_parse

   (PHP 4 >= 4.0.5)
   yaz_ccl_parse -- Invoke CCL Parser

Description

   bool yaz_ccl_parse ( resource id, string query, array & result)

   This function invokes a CCL parser. It converts a given CCL FIND query
   to an RPN query which may be passed to the yaz_search() function to
   perform a search. To define a set of valid CCL fields call
   yaz_ccl_conf() prior to this function. If the supplied query was
   successfully converted to RPN, this function returns TRUE, and the
   index rpn of the supplied array result holds a valid RPN query. If the
   query could not be converted (because of invalid syntax, unknown
   field, etc.) this function returns FALSE and three indexes are set in
   the resulting array to indicate the cause of failure: errorcode CCL
   error code (integer), errorstring CCL error string, and errorpos
   approximate position in query of failure (integer is character
   position).

   Example 1. CCL Parsing

   We will try to search using CCL. In the example below, $ccl is a CCL
   query.
   <?php
   yaz_ccl_conf($id, $fields);  // see example for yaz_ccl_conf
   if (!yaz_ccl_parse($id, $ccl, &$cclresult)) {
       echo 'Error: ' . $cclresult["errorstring"];
   } else {
       $rpn = $cclresult["rpn"];
       yaz_search($id, "rpn", $rpn);
   }
   ?>
   ______________________________________________________________________

   Prev         Home      Next
   yaz_ccl_conf  Up  yaz_close
