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

(PHP 4 >= 4.0.3, PHP 5, PHP 7) Sync with PostgreSQL backend

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

(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) Create a large object

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

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Convert associative array values into suitable for SQL statement

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns the number of fields in a result

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

(PHP 4, PHP 5, PHP 7) Closes a PostgreSQL connection