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

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

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

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

(PHP 5 >= 5.2.0, PHP 7) Returns the name or oid of the tables field

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

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

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Escape a string for insertion into a bytea field

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