From 1bbab254554a63dfc8d1507883323f29349dd850 Mon Sep 17 00:00:00 2001
From: Wez Furlong <wez@php.net>
Date: Sat, 2 Jul 2005 21:01:38 +0000
Subject: [PATCH] Experimental support for queries returning multiple rowsets
 under mysql 5.0. Patch from Guy Harrison (guy dot a dot harrison (at) gmail
 dot com)

---
 ext/pdo_mysql/config.m4         |  2 +-
 ext/pdo_mysql/mysql_driver.c    | 12 +++++++--
 ext/pdo_mysql/mysql_statement.c | 45 ++++++++++++++++++++++++++++++++-
 3 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/ext/pdo_mysql/config.m4 b/ext/pdo_mysql/config.m4
index 4ea134621c..c38e970f2d 100755
--- a/ext/pdo_mysql/config.m4
+++ b/ext/pdo_mysql/config.m4
@@ -58,7 +58,7 @@ Note that the MySQL client library is not bundled anymore!])
 
   _SAVE_LDFLAGS=$LDFLAGS
   LDFLAGS="$LDFLAGS $PDO_MYSQL_LIBS"
-  AC_CHECK_FUNCS([mysql_commit mysql_stmt_prepare]) 	
+  AC_CHECK_FUNCS([mysql_commit mysql_stmt_prepare mysql_next_result]) 
   LDFLAGS=$_SAVE_LDFLAGS
 
   PHP_CHECK_PDO_INCLUDES
diff --git a/ext/pdo_mysql/mysql_driver.c b/ext/pdo_mysql/mysql_driver.c
index 8d15cf35a0..a0f7ac07c1 100755
--- a/ext/pdo_mysql/mysql_driver.c
+++ b/ext/pdo_mysql/mysql_driver.c
@@ -2,7 +2,7 @@
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
-  | Copyright (c) 1997-2004 The PHP Group                                |
+  | Copyright (c) 1997-2005 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.0 of the PHP license,       |
   | that is bundled with this package in the file LICENSE, and is        |
@@ -305,6 +305,14 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_
 		{ "port",   "3306",	0 },
 		{ "unix_socket",  PDO_MYSQL_UNIX_ADDR,	0 },
 	};
+	int connect_opts = 0
+#ifdef CLIENT_MULTI_RESULTS
+		|CLIENT_MULTI_RESULTS
+#endif
+#ifdef CLIENT_MULTI_STATEMENTS
+		|CLIENT_MULTI_STATEMENTS
+#endif
+		;
 
 	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 4);
 
@@ -337,7 +345,7 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_
 		port = atoi(vars[3].optval); 
 	}
 	dbname = vars[1].optval;
-	if (mysql_real_connect(H->server, host, dbh->username, dbh->password, dbname, port, unix_socket, 0) == NULL) {
+	if (mysql_real_connect(H->server, host, dbh->username, dbh->password, dbname, port, unix_socket, connect_opts) == NULL) {
 		pdo_mysql_error(dbh);
 		goto cleanup;
 	}
diff --git a/ext/pdo_mysql/mysql_statement.c b/ext/pdo_mysql/mysql_statement.c
index 564418c695..a88eb15b8d 100755
--- a/ext/pdo_mysql/mysql_statement.c
+++ b/ext/pdo_mysql/mysql_statement.c
@@ -93,6 +93,46 @@ static int pdo_mysql_stmt_execute(pdo_stmt_t *stmt TSRMLS_DC)
 	return 1;
 }
 
+#if HAVE_MYSQL_NEXT_RESULT
+static int pdo_mysql_stmt_next_rowset(pdo_stmt_t *stmt TSRMLS_DC)
+{
+	pdo_mysql_stmt *S = (pdo_mysql_stmt*)stmt->driver_data;
+	pdo_mysql_db_handle *H = S->H;
+	my_ulonglong row_count;
+	int debug=0;
+	int ret;
+
+	/* ensure that we free any previous unfetched results */
+	if (S->result) {
+		mysql_free_result(S->result);
+		S->result = NULL;
+	}
+
+	ret = mysql_next_result(H->server);
+
+	if (ret > 0) {
+		pdo_mysql_error_stmt(stmt);
+		return 0;
+	} else if (ret < 0) {
+		/* No more results */
+		return 0;
+	} else {
+		row_count = mysql_affected_rows(H->server);
+		S->result = mysql_use_result(H->server);
+
+		if (NULL == S->result) {
+			return 0;
+		}
+
+		stmt->row_count = row_count;
+		stmt->column_count = (int) mysql_num_fields(S->result);
+		S->fields = mysql_fetch_fields(S->result);
+		return 1;
+	}
+}
+#endif
+
+
 static int pdo_mysql_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
 		enum pdo_param_event event_type TSRMLS_DC)
 {
@@ -256,7 +296,10 @@ struct pdo_stmt_methods mysql_stmt_methods = {
 	pdo_mysql_stmt_param_hook,
 	NULL, /* set_attr */
 	NULL, /* get_attr */
-	pdo_mysql_stmt_col_meta
+	pdo_mysql_stmt_col_meta,
+#if HAVE_MYSQL_NEXT_RESULT
+	pdo_mysql_stmt_next_rowset
+#endif
 };
 
 /*
-- 
2.40.0