Fixed bug #47639 (pg_copy_from() WARNING: nonstandard use of \\ in a string

literal)

ext/pgsql/pgsql.c

@@ -3890,7 +3890,7 @@ PHP_FUNCTION(pg_copy_from)
 
 	ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);
 
-	spprintf(&query, 0, "COPY \"%s\" FROM STDIN DELIMITERS '%c' WITH NULL AS '%s'", table_name, *pg_delim, pg_null_as);
+	spprintf(&query, 0, "COPY \"%s\" FROM STDIN DELIMITERS E'%c' WITH NULL AS E'%s'", table_name, *pg_delim, pg_null_as);
 	while ((pgsql_result = PQgetResult(pgsql))) {
 		PQclear(pgsql_result);
 	}