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-rw-r--r--system/database/drivers/mysqli/mysqli_utility.php165
1 files changed, 121 insertions, 44 deletions
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
index 3fdc5c723..5d2bdbce0 100644
--- a/system/database/drivers/mysqli/mysqli_utility.php
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -2,7 +2,7 @@
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
@@ -34,60 +34,137 @@
*/
class CI_DB_mysqli_utility extends CI_DB_utility {
+ protected $_list_databases = 'SHOW DATABASES';
+ protected $_optimize_table = 'OPTIMIZE TABLE %s';
+ protected $_repair_table = 'REPAIR TABLE %s';
+
/**
- * List databases
+ * MySQLi Export
*
- * @return string
+ * @param array Preferences
+ * @return mixed
*/
- public function _list_databases()
+ protected function _backup($params = array())
{
- return 'SHOW DATABASES';
- }
+ if (count($params) === 0)
+ {
+ return FALSE;
+ }
- // --------------------------------------------------------------------
+ // Extract the prefs for simplicity
+ extract($params);
- /**
- * Optimize table query
- *
- * Generates a platform-specific query so that a table can be optimized
- *
- * @param string the table name
- * @return string
- */
- public function _optimize_table($table)
- {
- return 'OPTIMIZE TABLE '.$this->db->_escape_identifiers($table);
- }
+ // 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));
- /**
- * Repair table query
- *
- * Generates a platform-specific query so that a table can be repaired
- *
- * @param string the table name
- * @return string
- */
- public function _repair_table($table)
- {
- return 'REPAIR TABLE '.$this->db->_escape_identifiers($table);
- }
+ // No result means the table name was invalid
+ if ($query === FALSE)
+ {
+ continue;
+ }
- // --------------------------------------------------------------------
+ // Write out the table schema
+ $output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
- /**
- * MySQLi Export
- *
- * @param array Preferences
- * @return mixed
- */
- public function _backup($params = array())
- {
- // Currently unsupported
- return $this->db->display_error('db_unsuported_feature');
+ if ($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 */
-/* Location: ./system/database/drivers/mysqli/mysqli_utility.php */
+/* Location: ./system/database/drivers/mysqli/mysqli_utility.php */ \ No newline at end of file