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

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns the internal storage size of the named field

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

(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) Returns the number of fields in a result

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

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

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

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