SimpleMachines / SMF2.1

	$file_steps = $upcontext['table_count'];

	// What ones have we already done?

	foreach ($table_names as $id => $table)

		if ($id < $_GET['substep'])

			$upcontext['previous_tables'][] = $table;

	if ($command_line)

		echo 'Backing Up Tables.';

	$upcontext['cur_table_name'] = isset($keys[$_GET['substep']]) ? $keys[$_GET['substep']] : $keys[0];

	$upcontext['step_progress'] = (int) (($upcontext['cur_table_num'] / $upcontext['table_count']) * 100);

	foreach ($keys as $id => $table)

		if ($id < $_GET['substep'])

			$upcontext['previous_tables'][] = $table;

	if ($command_line)

		echo 'Converting data from serialize() to json_encode().';