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# yaz_ccl_parse

(PHP 4 >= 4.0.5)

yaz_ccl_parse -- Invoke CCL Parser

## Description

``int yaz_ccl_parse` (int id, string query, array &result)`

This function invokes the 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).

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