(PECL solr >= 0.9.2)
SolrUtils::escapeQueryChars — Escapes a lucene query string
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
strThis is the query string to be escaped.
Returns the escaped string o false in caso di fallimento.