string pg_client_encoding ([int connection])
The functions returns the client encoding as the string. The returned string should be either : SQL_ASCII, EUC_JP, EUC_CN, EUC_KR, EUC_TW, UNICODE, MULE_INTERNAL, LATINX (X=1...9), KOI8, WIN, ALT, SJIS, BIG5, WIN1250.
Note: This function requires PHP-4.0.2 or higher and PostgreSQL-7.0 or higher.
The function used to be called pg_clientencoding().
See also pg_set_client_encoding().