PostgreSQL supports automatic character set conversion between server and client for certain character sets. pg_client_encoding returns the client encoding as a string. The returned string will be one of the standard PostgreSQL encoding identifiers.
This function requires PostgreSQL 7.0 or higher. If libpq is compiled without multibyte encoding support, pg_client_encoding always returns SQL_ASCII. Supported encoding depends on PostgreSQL version. Refer to the PostgreSQL Documentation supported encodings.
The function used to be called pg_clientencoding.
An PgSql\Connection instance. When connection is null, the default connection is used. The default connection is the last connection made by pg_connect or pg_pconnect.
As of PHP 8.1.0, using the default connection is deprecated.
The client encoding.
|8.1.0||The connection parameter expects an PgSql\Connection instance now; previously, a resource was expected.|
|8.0.0||connection is now nullable.|