diff options
| -rw-r--r-- | system/database/drivers/mysqli/mysqli_utility.php | 119 | ||||
| -rw-r--r-- | user_guide_src/source/changelog.rst | 5 |
2 files changed, 120 insertions, 4 deletions
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php index 27d4ef817..5d2bdbce0 100644 --- a/system/database/drivers/mysqli/mysqli_utility.php +++ b/system/database/drivers/mysqli/mysqli_utility.php @@ -46,9 +46,124 @@ class CI_DB_mysqli_utility extends CI_DB_utility { */ protected function _backup($params = array()) { - // Currently unsupported - return $this->db->display_error('db_unsuported_feature'); + if (count($params) === 0) + { + return FALSE; + } + + // Extract the prefs for simplicity + extract($params); + + // Build the output + $output = ''; + foreach ( (array) $tables as $table) + { + // Is the table in the "ignore" list? + if (in_array($table, (array) $ignore, TRUE)) + { + continue; + } + + // Get the table schema + $query = $this->db->query('SHOW CREATE TABLE '.$this->db->escape_identifiers($this->db->database.'.'.$table)); + + // No result means the table name was invalid + if ($query === FALSE) + { + continue; + } + + // Write out the table schema + $output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline; + + if ($add_drop === TRUE) + { + $output .= 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table).';'.$newline.$newline; + } + + $i = 0; + $result = $query->result_array(); + foreach ($result[0] as $val) + { + if ($i++ % 2) + { + $output .= $val.';'.$newline.$newline; + } + } + + // If inserts are not needed we're done... + if ($add_insert === FALSE) + { + continue; + } + + // Grab all the data from the current table + $query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table)); + + if ($query->num_rows() === 0) + { + continue; + } + + // Fetch the field names and determine if the field is an + // integer type. We use this info to decide whether to + // surround the data with quotes or not + + $i = 0; + $field_str = ''; + $is_int = array(); + while ($field = $query->result_id->fetch_field()) + { + // Most versions of MySQL store timestamp as a string + $is_int[$i] = in_array(strtolower($field->type), + array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), //, 'timestamp'), + TRUE); + + // Create a string of field names + $field_str .= $this->db->escape_identifiers($field->name).', '; + $i++; + } + + // Trim off the end comma + $field_str = preg_replace('/, $/' , '', $field_str); + + // Build the insert string + foreach ($query->result_array() as $row) + { + $val_str = ''; + + $i = 0; + foreach ($row as $v) + { + // Is the value NULL? + if ($v === NULL) + { + $val_str .= 'NULL'; + } + else + { + // Escape the data if it's not an integer + $val_str .= ($is_int[$i] === FALSE) ? $this->db->escape($v) : $v; + } + + // Append a comma + $val_str .= ', '; + $i++; + } + + // Remove the comma at the end of the string + $val_str = preg_replace('/, $/' , '', $val_str); + + // Build the INSERT string + $output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline; + } + + $output .= $newline.$newline; + } + + return $output; } + } /* End of file mysqli_utility.php */ diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst index ebf29791b..f91a1dc99 100644 --- a/user_guide_src/source/changelog.rst +++ b/user_guide_src/source/changelog.rst @@ -77,6 +77,7 @@ Release Date: Not Released - OOP style of the PHP extension is now used, instead of the procedural aliases. - Server version checking is now done via ``mysqli::$server_info`` instead of running an SQL query. - Added persistent connections support for PHP >= 5.3. + - Added support for backup() in :doc:`Database Utilities <database/utilities>`. - Added 'dsn' configuration setting for drivers that support DSN strings (PDO, PostgreSQL, Oracle, ODBC, CUBRID). - Improved PDO database support. - Added Interbase/Firebird database support via the "interbase" driver. @@ -86,7 +87,7 @@ Release Date: Not Released - Improved support of the PostgreSQL driver, including: - pg_version() is now used to get the database version number, when possible. - Added db_set_charset() support. - - Added _optimize_table() support for the :doc:`Database Utility Class <database/utilities>` (rebuilds table indexes). + - Added support for optimize_table() in :doc:`Database Utilities <database/utilities>` (rebuilds table indexes). - Added boolean data type support in escape(). - Added update_batch() support. - Removed limit() and order_by() support for UPDATE and DELETE queries in as PostgreSQL does not support those features. @@ -114,7 +115,7 @@ Release Date: Not Released - Generally improved for speed and cleaned up all of its components. - *Row* result methods now really only fetch only the needed number of rows, instead of depending entirely on result(). - num_rows() is now only called explicitly by the developer and no longer re-executes statements. - - Improved support of the Sqlite driver, including: + - Improved support of the SQLite driver, including: - Added support for replace() in :doc:`Query Builder <database/query_builder>`. - Added support for drop_table() in :doc:`Database Forge <database/forge>`. - Added ODBC support for create_database(), drop_database() and drop_table() in :doc:`Database Forge <database/forge>`. |