diff options
Diffstat (limited to 'system/database/drivers')
| -rw-r--r-- | system/database/drivers/cubrid/cubrid_driver.php | 38 | ||||
| -rw-r--r-- | system/database/drivers/ibase/ibase_driver.php | 32 | ||||
| -rw-r--r-- | system/database/drivers/mssql/mssql_driver.php | 30 | ||||
| -rw-r--r-- | system/database/drivers/mysql/mysql_driver.php | 37 | ||||
| -rw-r--r-- | system/database/drivers/mysqli/mysqli_driver.php | 30 | ||||
| -rw-r--r-- | system/database/drivers/oci8/oci8_driver.php | 41 | ||||
| -rw-r--r-- | system/database/drivers/odbc/odbc_driver.php | 34 | ||||
| -rw-r--r-- | system/database/drivers/pdo/pdo_driver.php | 30 | ||||
| -rw-r--r-- | system/database/drivers/postgre/postgre_driver.php | 30 | ||||
| -rw-r--r-- | system/database/drivers/sqlite/sqlite_driver.php | 39 | ||||
| -rw-r--r-- | system/database/drivers/sqlite3/sqlite3_driver.php | 30 | ||||
| -rw-r--r-- | system/database/drivers/sqlsrv/sqlsrv_driver.php | 30 |
12 files changed, 71 insertions, 330 deletions
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php index f80b4db54..65f4adb3f 100644 --- a/system/database/drivers/cubrid/cubrid_driver.php +++ b/system/database/drivers/cubrid/cubrid_driver.php @@ -187,25 +187,17 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if (($autocommit = cubrid_get_autocommit($this->conn_id)) === NULL) { - return TRUE; + return FALSE; } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - - if (cubrid_get_autocommit($this->conn_id)) + elseif ($autocommit === TRUE) { - cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); + return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); } return TRUE; @@ -218,19 +210,16 @@ class CI_DB_cubrid_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if ( ! cubrid_commit($this->conn_id)) { - return TRUE; + return FALSE; } - cubrid_commit($this->conn_id); - if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { - cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); + return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; @@ -243,16 +232,13 @@ class CI_DB_cubrid_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if ( ! cubrid_rollback($this->conn_id)) { - return TRUE; + return FALSE; } - cubrid_rollback($this->conn_id); - if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php index 529c320cd..82550d51b 100644 --- a/system/database/drivers/ibase/ibase_driver.php +++ b/system/database/drivers/ibase/ibase_driver.php @@ -134,24 +134,16 @@ class CI_DB_ibase_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if (($trans_handle = ibase_trans($this->conn_id)) === FALSE) { - return TRUE; + return FALSE; } - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - - $this->_ibase_trans = ibase_trans($this->conn_id); - + $this->_ibase_trans = $trans_handle; return TRUE; } @@ -162,15 +154,15 @@ class CI_DB_ibase_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans->depth > 0) + if (ibase_commit($this->_ibase_trans)) { + $this->_ibase_trans = NULL; return TRUE; } - return ibase_commit($this->_ibase_trans); + return FALSE; } // -------------------------------------------------------------------- @@ -180,15 +172,15 @@ class CI_DB_ibase_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if (ibase_rollback($this->_ibase_trans)) { + $this->_ibase_trans = NULL; return TRUE; } - return ibase_rollback($this->_ibase_trans); + return FALSE; } // -------------------------------------------------------------------- diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php index 05e5418c3..883973ae1 100644 --- a/system/database/drivers/mssql/mssql_driver.php +++ b/system/database/drivers/mssql/mssql_driver.php @@ -182,22 +182,10 @@ class CI_DB_mssql_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return $this->simple_query('BEGIN TRAN'); } @@ -208,14 +196,8 @@ class CI_DB_mssql_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->simple_query('COMMIT TRAN'); } @@ -226,14 +208,8 @@ class CI_DB_mssql_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->simple_query('ROLLBACK TRAN'); } diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php index df0f24920..9c630d0d6 100644 --- a/system/database/drivers/mysql/mysql_driver.php +++ b/system/database/drivers/mysql/mysql_driver.php @@ -272,25 +272,12 @@ class CI_DB_mysql_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - $this->simple_query('SET AUTOCOMMIT=0'); - $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK - return TRUE; + return $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK } // -------------------------------------------------------------------- @@ -300,17 +287,15 @@ class CI_DB_mysql_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if ($this->simple_query('COMMIT')) { + $this->simple_query('SET AUTOCOMMIT=1'); return TRUE; } - $this->simple_query('COMMIT'); - $this->simple_query('SET AUTOCOMMIT=1'); - return TRUE; + return FALSE; } // -------------------------------------------------------------------- @@ -320,17 +305,15 @@ class CI_DB_mysql_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if ($this->simple_query('ROLLBACK')) { + $this->simple_query('SET AUTOCOMMIT=1'); return TRUE; } - $this->simple_query('ROLLBACK'); - $this->simple_query('SET AUTOCOMMIT=1'); - return TRUE; + return FALSE; } // -------------------------------------------------------------------- diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php index dd3cc77c6..827470078 100644 --- a/system/database/drivers/mysqli/mysqli_driver.php +++ b/system/database/drivers/mysqli/mysqli_driver.php @@ -291,22 +291,10 @@ class CI_DB_mysqli_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - $this->conn_id->autocommit(FALSE); return is_php('5.5') ? $this->conn_id->begin_transaction() @@ -320,14 +308,8 @@ class CI_DB_mysqli_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - if ($this->conn_id->commit()) { $this->conn_id->autocommit(TRUE); @@ -344,14 +326,8 @@ class CI_DB_mysqli_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - if ($this->conn_id->rollback()) { $this->conn_id->autocommit(TRUE); diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php index f2e40da9b..916ddeb90 100644 --- a/system/database/drivers/oci8/oci8_driver.php +++ b/system/database/drivers/oci8/oci8_driver.php @@ -378,27 +378,10 @@ class CI_DB_oci8_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - if ( ! $this->trans_enabled) - { - return TRUE; - } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - $this->commit_mode = is_php('5.3.2') ? OCI_NO_AUTO_COMMIT : OCI_DEFAULT; return TRUE; } @@ -410,20 +393,10 @@ class CI_DB_oci8_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - if ( ! $this->trans_enabled) - { - return TRUE; - } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - $this->commit_mode = OCI_COMMIT_ON_SUCCESS; + return oci_commit($this->conn_id); } @@ -434,14 +407,8 @@ class CI_DB_oci8_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - $this->commit_mode = OCI_COMMIT_ON_SUCCESS; return oci_rollback($this->conn_id); } diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php index f5d77a147..409284b44 100644 --- a/system/database/drivers/odbc/odbc_driver.php +++ b/system/database/drivers/odbc/odbc_driver.php @@ -143,22 +143,10 @@ class CI_DB_odbc_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return odbc_autocommit($this->conn_id, FALSE); } @@ -169,17 +157,15 @@ class CI_DB_odbc_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if (odbc_commit($this->conn_id)) { + odbc_autocommit($this->conn_id, TRUE); return TRUE; } - $ret = odbc_commit($this->conn_id); - odbc_autocommit($this->conn_id, TRUE); - return $ret; + return FALSE; } // -------------------------------------------------------------------- @@ -189,17 +175,15 @@ class CI_DB_odbc_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) + if (odbc_rollback($this->conn_id)) { + odbc_autocommit($this->conn_id, TRUE); return TRUE; } - $ret = odbc_rollback($this->conn_id); - odbc_autocommit($this->conn_id, TRUE); - return $ret; + return FALSE; } // -------------------------------------------------------------------- diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php index cc77e9568..8c5a5e7e3 100644 --- a/system/database/drivers/pdo/pdo_driver.php +++ b/system/database/drivers/pdo/pdo_driver.php @@ -186,22 +186,10 @@ class CI_DB_pdo_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return $this->conn_id->beginTransaction(); } @@ -212,14 +200,8 @@ class CI_DB_pdo_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->conn_id->commit(); } @@ -230,14 +212,8 @@ class CI_DB_pdo_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->conn_id->rollBack(); } diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php index 7be07c3bf..b1df326f7 100644 --- a/system/database/drivers/postgre/postgre_driver.php +++ b/system/database/drivers/postgre/postgre_driver.php @@ -247,22 +247,10 @@ class CI_DB_postgre_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return (bool) pg_query($this->conn_id, 'BEGIN'); } @@ -273,14 +261,8 @@ class CI_DB_postgre_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return (bool) pg_query($this->conn_id, 'COMMIT'); } @@ -291,14 +273,8 @@ class CI_DB_postgre_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return (bool) pg_query($this->conn_id, 'ROLLBACK'); } diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php index 9d9caa0b4..e000a8e50 100644 --- a/system/database/drivers/sqlite/sqlite_driver.php +++ b/system/database/drivers/sqlite/sqlite_driver.php @@ -122,24 +122,11 @@ class CI_DB_sqlite_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - - $this->simple_query('BEGIN TRANSACTION'); - return TRUE; + return $this->simple_query('BEGIN TRANSACTION'); } // -------------------------------------------------------------------- @@ -149,16 +136,9 @@ class CI_DB_sqlite_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - $this->simple_query('COMMIT'); - return TRUE; + return $this->simple_query('COMMIT'); } // -------------------------------------------------------------------- @@ -168,16 +148,9 @@ class CI_DB_sqlite_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - $this->simple_query('ROLLBACK'); - return TRUE; + return $this->simple_query('ROLLBACK'); } // -------------------------------------------------------------------- diff --git a/system/database/drivers/sqlite3/sqlite3_driver.php b/system/database/drivers/sqlite3/sqlite3_driver.php index 31e37de91..73e453785 100644 --- a/system/database/drivers/sqlite3/sqlite3_driver.php +++ b/system/database/drivers/sqlite3/sqlite3_driver.php @@ -134,22 +134,10 @@ class CI_DB_sqlite3_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return $this->conn_id->exec('BEGIN TRANSACTION'); } @@ -160,14 +148,8 @@ class CI_DB_sqlite3_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->conn_id->exec('END TRANSACTION'); } @@ -178,14 +160,8 @@ class CI_DB_sqlite3_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return $this->conn_id->exec('ROLLBACK'); } diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php index 1df3a4258..414669a4b 100644 --- a/system/database/drivers/sqlsrv/sqlsrv_driver.php +++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php @@ -197,22 +197,10 @@ class CI_DB_sqlsrv_driver extends CI_DB { /** * Begin Transaction * - * @param bool $test_mode * @return bool */ - public function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE); - return sqlsrv_begin_transaction($this->conn_id); } @@ -223,14 +211,8 @@ class CI_DB_sqlsrv_driver extends CI_DB { * * @return bool */ - public function trans_commit() + protected function _trans_commit() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return sqlsrv_commit($this->conn_id); } @@ -241,14 +223,8 @@ class CI_DB_sqlsrv_driver extends CI_DB { * * @return bool */ - public function trans_rollback() + protected function _trans_rollback() { - // When transactions are nested we only begin/commit/rollback the outermost ones - if ( ! $this->trans_enabled OR $this->_trans_depth > 0) - { - return TRUE; - } - return sqlsrv_rollback($this->conn_id); } |