(PHP 4 >= 4.2.0, PHP 5, PHP 7) Reset connection (reconnect)

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns the printed length

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Unescape binary for bytea type

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Gets the backend's process ID

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns number of affected records (tuples)

(PHP 5 >= 5.1.0, PHP 7) Sends a request to execute a prepared statement with given parameters, without waiting

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Test if a field is SQL NULL

(PHP 4, PHP 5, PHP 7) Get the options associated with the connection

(PHP 4, PHP 5, PHP 7) Return the TTY name associated with the connection

(PHP 5 >= 5.6.0, PHP 7) Poll the status of an in-progress asynchronous PostgreSQL connection attempt.