(PECL solr >= 0.9.2) Used for custom serialization

(PECL solr >= 0.9.2) Returns the term prefix

(PECL swish >= 0.1.0) Get a list of meta entries

(PECL sphinx >= 1.0.1) Set select clause public

(PECL swish >= 0.1.0) Set the search limits

(PECL solr >= 0.9.2) Returns an array containing all the fields in the document

(PECL solr >= 0.9.2) Specifies the type of algorithm to use when faceting a field

(PECL solr >= 0.9.2) Checks if the current position internally is still valid

(PECL swish >= 0.1.0) Prepare a search query

(PECL swish >= 0.1.0) Set the phrase delimiter