pg_client_encoding/pg_set_client_encoding should be compiled always.

Recent libpq has PQclientEncoding/PQsetClientEncoding regarless of
multibyte support enabled or not.

Reported by c@cornelia-boenigk.de

# This should be merged, but need a little more testing.

ext/pgsql/pgsql.c

@@ -137,10 +137,8 @@ function_entry pgsql_functions[] = {
 	PHP_FE(pg_escape_string,NULL)
 	PHP_FE(pg_escape_bytea, NULL)
 #endif
-#if HAVE_PQCLIENTENCODING
 	PHP_FE(pg_client_encoding,		NULL)
 	PHP_FE(pg_set_client_encoding,	NULL)
-#endif
 	/* misc function */
 	PHP_FE(pg_metadata,     NULL)
 	PHP_FE(pg_convert,      NULL)
@@ -172,10 +170,8 @@ function_entry pgsql_functions[] = {
 	PHP_FALIAS(pg_lowrite,	     pg_lo_write,       NULL)
 	PHP_FALIAS(pg_loimport,	     pg_lo_import,      NULL)
 	PHP_FALIAS(pg_loexport,	     pg_lo_export,      NULL)
-#if HAVE_PQCLIENTENCODING
 	PHP_FALIAS(pg_clientencoding,		pg_client_encoding,		NULL)
 	PHP_FALIAS(pg_setclientencoding,	pg_set_client_encoding,	NULL)
-#endif
 	{NULL, NULL, NULL} 
 };
 /* }}} */
@@ -2133,7 +2129,6 @@ PHP_FUNCTION(pg_lo_tell)
 }
 /* }}} */
 
-#ifdef HAVE_PQCLIENTENCODING
 /* {{{ proto int pg_set_client_encoding([resource connection,] string encoding)
    Set client encoding */
 PHP_FUNCTION(pg_set_client_encoding)
@@ -2159,13 +2154,18 @@ PHP_FUNCTION(pg_set_client_encoding)
 			WRONG_PARAM_COUNT;
 			break;
 	}
-	
+
+#ifdef HAVE_PQCLIENTENCODING
 	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, pgsql_link, id, "PostgreSQL link", le_link, le_plink);
 
 	convert_to_string_ex(encoding);
 	Z_LVAL_P(return_value) = PQsetClientEncoding(pgsql, Z_STRVAL_PP(encoding));
 	Z_TYPE_P(return_value) = IS_LONG;
-
+#else
+	php_error(E_NOTICE, "%s() PHP is compiled with libpq without multibyte PQsetClientEncoding"
+			  get_active_function_name(TSRMLS_C));
+	RETURN_LONG(-1);
+#endif
 }
 /* }}} */
 
@@ -2192,6 +2192,7 @@ PHP_FUNCTION(pg_client_encoding)
 			break;
 	}
 
+#ifdef HAVE_PQCLIENTENCODING
 	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, pgsql_link, id, "PostgreSQL link", le_link, le_plink);
 
 	/* Just do the same as found in PostgreSQL sources... */
@@ -2205,9 +2206,13 @@ PHP_FUNCTION(pg_client_encoding)
 	Z_STRLEN_P(return_value) = strlen(Z_STRVAL_P(return_value));
 	Z_STRVAL_P(return_value) = (char *) estrdup(Z_STRVAL_P(return_value));
 	Z_TYPE_P(return_value) = IS_STRING;
+#else
+	php_error(E_NOTICE, "%s() PHP is compiled with libpq without PQclientEncoding"
+			  get_active_function_name(TSRMLS_C));
+	RETURN_STRING("SQL_ASCII",1);
+#endif
 }
 /* }}} */
-#endif
 
 
 #define	COPYBUFSIZ	8192

ext/pgsql/php_pgsql.h

@@ -114,10 +114,8 @@ PHP_FUNCTION(pg_trace);
 PHP_FUNCTION(pg_untrace);
 
 /* utility functions */
-#if HAVE_PQCLIENTENCODING
 PHP_FUNCTION(pg_client_encoding);
 PHP_FUNCTION(pg_set_client_encoding);
-#endif
 #if HAVE_PQESCAPE
 PHP_FUNCTION(pg_escape_string);
 PHP_FUNCTION(pg_escape_bytea);