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;
+	}
+
+
 
 }