PHP Unconference Europe 2015

SolrUtils::escapeQueryChars

(PECL solr >= 0.9.2)

SolrUtils::escapeQueryCharsEscapes a lucene query string

Descrierea

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

Parametri

str

This is the query string to be escaped.

Valorile întoarse

Returns the escaped string sau FALSE în cazul eșecului.

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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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