maxdb_rollback
maxdb->rollback
(PECL maxdb:1.0-7.6.00.38)
maxdb->rollback — Rolls back current transaction
Описание
bool maxdb_rollback
( resource $link
)
maxdb
bool
rollback
( void
)
Rollbacks the current transaction for the database specified by the link parameter.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* disable autocommit */
$maxdb->autocommit(FALSE);
$maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");
$maxdb->query("INSERT INTO temp.mycity SELECT * FROM hotel.city");
/* commit insert */
$maxdb->commit();
/* delete all rows */
$maxdb->query("DELETE FROM temp.mycity");
if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
$row = $result->fetch_row();
printf("%d rows in table mycity.\n", $row[0]);
/* Free result */
$result->close();
}
/* Rollback */
$maxdb->rollback();
if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
$row = $result->fetch_row();
printf("%d rows in table mycity (after rollback).\n", $row[0]);
/* Free result */
$result->close();
}
/* Drop table myCity */
$maxdb->query("DROP TABLE temp.mycity");
$maxdb->close();
?>
Пример #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* disable autocommit */
maxdb_autocommit($link, FALSE);
maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
maxdb_query($link, "INSERT INTO temp.mycity SELECT * FROM hotel.city");
/* commit insert */
maxdb_commit($link);
/* delete all rows */
maxdb_query($link, "DELETE FROM temp.mycity");
if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
$row = maxdb_fetch_row($result);
printf("%d rows in table mycity.\n", $row[0]);
/* Free result */
maxdb_free_result($result);
}
/* Rollback */
maxdb_rollback($link);
if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
$row = maxdb_fetch_row($result);
printf("%d rows in table mycity (after rollback).\n", $row[0]);
/* Free result */
maxdb_free_result($result);
}
/* Drop table myCity */
maxdb_query($link, "DROP TABLE temp.mycity");
maxdb_close($link);
?>
The above examples would produce the following output:
0 rows in table mycity. 25 rows in table mycity (after rollback).
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- MaxDB
- maxdb_affected_rows
- maxdb_autocommit
- maxdb_bind_param
- maxdb_bind_result
- maxdb_change_user
- maxdb_character_set_name
- maxdb_client_encoding
- maxdb_close_long_data
- maxdb_close
- maxdb_commit
- maxdb_connect_errno
- maxdb_connect_error
- maxdb_connect
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- maxdb_disable_reads_from_master
- maxdb_disable_rpl_parse
- maxdb_dump_debug_info
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- maxdb_errno
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- maxdb_fetch_object
- maxdb_fetch_row
- maxdb_fetch
- maxdb_field_count
- maxdb_field_seek
- maxdb_field_tell
- maxdb_free_result
- maxdb_get_client_info
- maxdb_get_client_version
- maxdb_get_host_info
- maxdb_get_metadata
- maxdb_get_proto_info
- maxdb_get_server_info
- maxdb_get_server_version
- maxdb_info
- maxdb_init
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- maxdb_options
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- maxdb_ping
- maxdb_prepare
- maxdb_query
- maxdb_real_connect
- maxdb_real_escape_string
- maxdb_real_query
- maxdb_report
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- maxdb_rpl_parse_enabled
- maxdb_rpl_probe
- maxdb_rpl_query_type
- maxdb_select_db
- maxdb_send_long_data
- maxdb_send_query
- maxdb_server_end
- maxdb_server_init
- maxdb_set_opt
- maxdb_sqlstate
- maxdb_ssl_set
- maxdb_stat
- maxdb_stmt_affected_rows
- maxdb_stmt_bind_param
- maxdb_stmt_bind_result
- maxdb_stmt_close_long_data
- maxdb_stmt_close
- maxdb_stmt_data_seek
- maxdb_stmt_errno
- maxdb_stmt_error
- maxdb_stmt_execute
- maxdb_stmt_fetch
- maxdb_stmt_free_result
- maxdb_stmt_init
- maxdb_stmt_num_rows
- maxdb_stmt_param_count
- maxdb_stmt_prepare
- maxdb_stmt_reset
- maxdb_stmt_result_metadata
- maxdb_stmt_send_long_data
- maxdb_stmt_sqlstate
- maxdb_stmt_store_result
- maxdb_store_result
- maxdb_thread_id
- maxdb_thread_safe
- maxdb_use_result
- maxdb_warning_count
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