(PHP 4 >= 4.0.6, PHP 5, PHP 7) Returns the error number from previous operation

(PECL maxdb >= 1.0) Prepare an SQL statement for execution

(PHP 5 < 5.3.0) Enable RPL parse bool mys

(PHP 5, PHP 7) Fetch a result row as an associative, a numeric array, or both

(PHP 5, PHP 7) Close blob mixed ibase_blob_close

(PHP 5, PHP 7) Free memory allocated by a prepared query

(PHP 5, PHP 7) Set options bool mysqli::options

(PECL maxdb >= 1.0) Returns the MaxDB client version as a string

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Move the internal result pointer to the next result

(PECL mongo >=1.6.0) Get the read preference for this command