Added support for character sets in pg_escape_string() for PostgreSQL

8.1.4 and higher.

NEWS

@@ -3,6 +3,8 @@ PHP                                                                        NEWS
 ?? Sep 2006, PHP 5.2.0
 - Speedup array/HashTable copying. (Matt W, Dmitry)
 - Added ability to make SOAP call userspace PHP<->XML converters. (Dmitry)
+- Added support for character sets in pg_escape_string() for PostgreSQL
+  8.1.4 and higher. (Ilia)
 - Fixed infinite loop when a wrong color index is given to imagefill (Pierre)
 - Fixed mess with CGI/CLI -d option (now it works with cgi; constants are
   working exactly like in php.ini; with FastCGI -d affects all requests).

ext/pgsql/config.m4

@@ -91,6 +91,7 @@ if test "$PHP_PGSQL" != "no"; then
   AC_CHECK_LIB(pq, PQgetCopyData,AC_DEFINE(HAVE_PQGETCOPYDATA,1,[PostgreSQL 7.4 or later]))
   AC_CHECK_LIB(pq, PQsetErrorVerbosity,AC_DEFINE(HAVE_PQSETERRORVERBOSITY,1,[PostgreSQL 7.4 or later]))
   AC_CHECK_LIB(pq, PQftable,AC_DEFINE(HAVE_PQFTABLE,1,[PostgreSQL 7.4 or later]))
+  AC_CHECK_LIB(pq, PQescapeStringConn, AC_DEFINE(HAVE_PQESCAPE_CONN,1,[PostgreSQL 8.1 or later]))
   AC_CHECK_LIB(pq, pg_encoding_to_char,AC_DEFINE(HAVE_PGSQL_WITH_MULTIBYTE_SUPPORT,1,[Whether libpq is compiled with --enable-multibyte]))
   LIBS=$old_LIBS
   LDFLAGS=$old_LDFLAGS

ext/pgsql/pgsql.c

@@ -3547,20 +3547,36 @@ PHP_FUNCTION(pg_copy_from)
 /* }}} */
 
 #ifdef HAVE_PQESCAPE
-/* {{{ proto string pg_escape_string(string data)
+/* {{{ proto string pg_escape_string([resource connection,] string data)
    Escape string for text/char type */
 PHP_FUNCTION(pg_escape_string)
 {
 	char *from = NULL, *to = NULL;
+	zval *pgsql_link;
+	PGconn *pgsql;
 	int to_len;
 	int from_len;
-	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s",
-							  &from, &from_len) == FAILURE) {
-		return;
+	int id;
+
+	if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() TSRMLS_CC, "rs", &pgsql_link, &from, &from_len) == SUCCESS) {
+		id = -1;
+	} else if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &from, &from_len) == SUCCESS) {
+		pgsql_link = NULL;
+		id = PGG(default_link);
+	} else {
+		WRONG_PARAM_COUNT;
 	}
 
-	to = (char *)safe_emalloc(from_len, 2, 1);
-	to_len = (int)PQescapeString(to, from, from_len);
+	to = (char *) safe_emalloc(from_len, 2, 1);
+
+#ifdef HAVE_PQESCAPE_CONN
+	if (pgsql_link != NULL || id != -1) {
+		ZEND_FETCH_RESOURCE2(pgsql, PGconn *, &pgsql_link, id, "PostgreSQL link", le_link, le_plink);
+		to_len = (int) PQescapeStringConn(pgsql, to, from, (size_t)from_len, NULL);
+	} else 	
+#endif
+		to_len = (int) PQescapeString(to, from, (size_t)from_len);
+
 	RETURN_STRINGL(to, to_len, 0);
 }
 /* }}} */