convert human to bytes file size

human2bytes.php

<?

function human2bytes_2($t)
{
	if( preg_match("#([0-9.]{1,})(B|KB|MB|GB|TB)#",$t,$maches) )
	{
		$num = $maches[1];
		$unit = $maches[2];
		$mm = array('B'=>1,
					'KB'=>1024,
					'MB'=>1024*1024,
					'GB'=>1024*1024*1024,
					'TB'=>1024*1024*1024*1024);
		return round( floatval($num) * $mm[$unit] );
	}
	else
		return false;
}

function human2bytes($t)
{
	function tobytes($maches)
	{
		$num = $maches[1];
		$unit = $maches[2];
		$mm = array('B'=>1,
					'KB'=>1024,
					'MB'=>1024*1024,
					'GB'=>1024*1024*1024,
					'TB'=>1024*1024*1024*1024);
		return round( floatval($num)*$mm[$unit] );
	}
	return preg_replace_callback("#([0-9.]{1,})(B|KB|MB|GB|TB)#",'tobytes',$t);
}
?>