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Set the client encoding (PHP 4 >= 4.0.3, PHP 5)
int pg_set_client_encoding ( string encoding )
int pg_set_client_encoding ( resource connection, string encoding )

pg_set_client_encoding() sets the client encoding and returns 0 if success or -1 if error.

PostgreSQL will automatically convert data in the backend database encoding into the frontend encoding.


The function used to be called pg_setclientencoding().



PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().


The required client encoding. One of SQL_ASCII, EUC_JP, EUC_CN, EUC_KR, EUC_TW, UNICODE, MULE_INTERNAL, LATINX (X=1...9), KOI8, WIN, ALT, SJIS, BIG5 or WIN1250.

The exact list of available encodings depends on your PostgreSQL version, so check your PostgreSQL manual for a more specific list.

Return Values

Returns 0 on success or -1 on error.


Example 1976. pg_set_client_encoding() example


= pg_pconnect("dbname=publisher");
if (!
$conn) {
"An error occured.\n";

// Set the client encoding to UNICODE.  Data will be automatically
// converted from the backend encoding to the frontend.
pg_set_client_encoding($conn, UNICODE);

$result = pg_query($conn, "SELECT author, email FROM authors");
if (!
$result) {
"An error occured.\n";

// Write out UTF-8 data
while ($row = pg_fetch_row($result)) {
"Author: $row[0]  E-mail: $row[1]";
"<br />\n";