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Php yaz ccl parse () function

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(PHP 4 >= 4.0.5, PHP 5)

yaz_ccl_parse -- Invoke CCL Parser

Syntax

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);
}
?>

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Php yaz ccl parse syntax tutorial

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