Implemented backup data methods in mysql and pgsql drivers

drivers/mysql/mysql_util.php

@@ -127,9 +127,52 @@ class MySQL_Util extends DB_Util {
 	public function backup_data($exclude=array())
 	{
 		$tables = $this->get_tables();
+		
+		// Filter out the tables you don't want
+		if( ! empty($exclude))
+		{
+			$tables = array_diff($tables, $exclude);
+		}
+		
+		$output_sql = '';
+		
+		// Select the rows from each Table
+		foreach($tables as &$t)
+		{
+			$sql = "SELECT * FROM `{$t}`";
+			$res = $this->query($sql);
+			$rows = $res->fetchAll(PDO::FETCH_ASSOC);
+			
+			$res = NULL;
+			
+			// Skip empty tables
+			if (count($rows) < 1) continue;
+			
+			// Nab the column names by getting the keys of the first row
+			$columns = @array_keys($rows[0]);
+
+			$insert_rows = array();
+			
+			// Create the insert statements
+			foreach($rows as &$row)
+			{
+				$row = array_values($row);
+				$row = array_map(array(&$this, 'quote'), $row);
+				$row = array_map('trim', $row);
+
+				$row_string = 'INSERT INTO `'.trim($t).'` (`'.implode('`,`', $columns).'`) VALUES ('.implode(',', $row).');';
+
+				$row = NULL;
+
+				$insert_rows[] = $row_string;
+			}
+			
+			$obj_res = NULL;
+
+			$output_sql .= "\n\n".implode("\n", $insert_rows)."\n";
+		}
 	
-		// @todo Implement Backup function
-		return '';
+		return $output_sql;
 	}
 }
 // End of mysql_util.php

drivers/pgsql/pgsql_util.php

@@ -110,12 +110,61 @@ class PgSQL_Util extends DB_Util {
 	/**
 	 * Create an SQL backup file for the current database's data
 	 *
+	 * @param array $exclude
 	 * @return string
 	 */
-	public function backup_data()
+	public function backup_data($exclude=array())
 	{
-		// @todo Implement Backup function
-		return '';
+		$tables = $this->get_tables();
+	
+		// Filter out the tables you don't want
+		if( ! empty($exclude))
+		{
+			$tables = array_diff($tables, $exclude);
+		}
+
+		$output_sql = '';
+
+		// Get the data for each object
+		foreach($tables as $t)
+		{
+			$sql = 'SELECT * FROM "'.trim($t).'"';
+			$res = $this->query($sql);
+			$obj_res = $res->fetchAll(PDO::FETCH_ASSOC);
+			
+			// Don't add to the file if the table is empty
+			if (count($obj_res) < 1) continue;
+			
+			$res = NULL;
+
+			// Nab the column names by getting the keys of the first row
+			$columns = @array_keys($obj_res[0]);
+
+			$insert_rows = array();
+
+			// Create the insert statements
+			foreach($obj_res as $row)
+			{
+				$row = array_values($row);
+
+				// Quote values as needed by type
+				$row = array_map(array(&$this, 'quote'), $row);
+				$row = array_map('trim', $row);
+
+
+				$row_string = 'INSERT INTO "'.trim($t).'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
+
+				$row = NULL;
+
+				$insert_rows[] = $row_string;
+			}
+
+			$obj_res = NULL;
+
+			$output_sql .= "\n\n".implode("\n", $insert_rows)."\n";
+		}
+
+		return $output_sql;
 	}
 }
 // End of pgsql_util.php