(PECL mongo >=0.9.0) Limits the number of results returned

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Get/Set database virtual current directory

(PECL CUBRID >= 8.4.1) Tell the cursor position of the LOB object.

(PHP 5 >= 5.6.0, PHP 7) Flush outbound query data on the connection

(PECL CUBRID >=8.3.0) Fetch a result row as an associative array, a numeric array, or both

(PECL maxdb >= 1.0) Fetch meta-data for a single field

(PECL mongo >=1.0.1) Log in to this database

(PHP 5 >= 5.3.0, PHP 7) Returns the row ID of the most recent INSERT into the database

(PECL mongo >=0.9.0) Returns this file's size

(PECL CUBRID >= 8.4.1) Set the timeout time of query execution