(PHP 4 >= 4.2.0, PHP 5, PHP 7) Cancel an asynchronous query

(PHP 5 >= 5.1.0, PHP 7) Returns an individual field of an error report.

(PHP 5 >= 5.6.0, PHP 7) Get a read only handle to the socket underlying a PostgreSQL connection

(PHP 5 >= 5.1.0, PHP 7) Fetches all rows in a particular result column as an array

(PHP 5, PHP 7) Looks up a current parameter setting of the server.

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Execute a query

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Get the last error message string of a connection

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Read a large object

(PHP 4 >= 4.0.3, PHP 5, PHP 7) Gets the client encoding

(PHP 4, PHP 5, PHP 7) Fetch a row as an object