SolrUtils::escapeQueryChars

(PECL solr >= 0.9.2)

SolrUtils::escapeQueryCharsEscapes a lucene query string

Descrizione

public static string SolrUtils::escapeQueryChars ( string $str )

Lucene supports escaping special characters that are part of the query syntax.

The current list special characters are:

+ - && || ! ( ) { } [ ] ^ " ~ * ? : \ /

These characters are part of the query syntax and must be escaped

Elenco dei parametri

str

This is the query string to be escaped.

Valori restituiti

Returns the escaped string o FALSE in caso di fallimento.

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User Contributed Notes 1 note

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Ian
1 year ago
A way of doing that with a regular expression:

<?php
// Lucene characters that need escaping with \ are + - && || ! ( ) { } [ ] ^ " ~ * ? : \
$luceneReservedCharacters = preg_quote('+-&|!(){}[]^"~*?:\\');
$query = preg_replace_callback(
   
'/([' . $luceneReservedCharacters . '])/',
    function(
$matches) {
        return
'\\' . $matches[0];
    },
   
$query);
?>
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