(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Returns size of the collection

(PHP 4, PHP 5, PHP 7) Send mSQL query resource

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

(PHP 5 >= 5.1.0, PHP 7) Determines the verbosity of messages returned by

(PECL mongo >=1.5.0) Executes the command and resets the cursor to the start of the result set

(PECL mongo >=0.9.0) Inserts a document into the collection

(PECL mongo >=1.5.0) Execute an aggregation pipeline command and retrieve results through a cursor

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

(PECL maxdb >= 1.0) Retrieves information about the most recently executed query

(PECL mongo >=1.0.4) Adds a top-level key/value pair to a query