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-rw-r--r--system/database/drivers/mysqli/mysqli_utility.php131
1 files changed, 131 insertions, 0 deletions
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
index a40441d20..17af40b76 100644
--- a/system/database/drivers/mysqli/mysqli_utility.php
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -108,6 +108,137 @@ class CI_DB_mysqli_utility extends CI_DB_utility {
return "REPAIR TABLE ".$this->db->_escape_table($table);
}
+ // --------------------------------------------------------------------
+
+ /**
+ * MySQLi Export
+ *
+ * @access private
+ * @param array Preferences
+ * @return mixed
+ */
+ function _backup($params = array())
+ {
+ if (count($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->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)
+ {
+ $output .= 'DROP TABLE IF EXISTS '.$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 $table");
+
+ if ($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 = mysqli_fetch_field($query->result_id))
+ {
+ $is_int[$i] = (in_array(
+ strtolower(mysql_field_type($query->result_id, $i)),
+ array('tinyint', 'smallint', 'mediumint', 'int', 'bigint', 'timestamp'),
+ TRUE)
+ ) ? TRUE : FALSE;
+
+ // Create a string of field names
+ $field_str .= $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)
+ {
+ // Do a little formatting...
+ $v = str_replace(array("\x00", "\x0a", "\x0d", "\x1a"), array('\0', '\n', '\r', '\Z'), $v);
+ $v = str_replace(array("\n", "\r", "\t"), array('\n', '\r', '\t'), $v);
+ $v = str_replace('\\', '\\\\', $v);
+ $v = str_replace('\'', '\\\'', $v);
+ $v = str_replace('\\\n', '\n', $v);
+ $v = str_replace('\\\r', '\r', $v);
+ $v = str_replace('\\\t', '\t', $v);
+
+ // Escape the data if it's not an integer type
+ $val_str .= ($is_int[$i] == FALSE) ? $this->db->escape($v) : $v;
+ $val_str .= ', ';
+
+ $i++;
+ }
+
+ $val_str = preg_replace( "/, $/" , "" , $val_str);
+
+ // Build the INSERT string
+ $output .= 'INSERT INTO '.$table.' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
+ }
+
+ $output .= $newline.$newline;
+ }
+
+ return $output;
+ }
+
+
}