How to show file size in MB

$url     = 'http://example.com/files/opps.mp4';
$headers = get_headers($url, true);

if ( isset($headers['Content-Length']) ) {
   $size = 'file size:' . $headers['Content-Length'];
}
else {
   $size = 'file size: unknown';
}

echo $size;

PHP:

Result like "file size:4148758"
this script show size as byte and how can i show in MB .

 

<?php
// Snippet from PHP Share: http://www.phpshare.org

function formatSizeUnits($bytes){if($bytes >=1073741824){
$bytes = number_format($bytes /1073741824,2).' GB';}
elseif ($bytes >=1048576){
$bytes = number_format($bytes /1048576,2).' MB';}
elseif ($bytes >=1024){
$bytes = number_format($bytes /1024,2).' KB';}
elseif ($bytes >1){
$bytes = $bytes .' bytes';}
elseif ($bytes ==1){
$bytes = $bytes .' byte';}else{
$bytes ='0 bytes';}

return $bytes;}?>

PHP:

 

How can i use in my script

 

Try mine, it short circuits cleaner and avoids long compares:

function formatSize($amount) {
	if ($amount < 1024) return $amount . 'B';
	$metricList = ['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB'];
	foreach ($metricList as $metric)
		if (($amount /= 1024) < 1024)
			return numberFormat($amount, 2) . $metric;
	return number_format($amount, 2) . 'YB';
} // formatSize

Code (markup):

Just add that function before whatever you're calling, then change just the one line:

   $size = 'file size:' . formatSize($headers['Content-Length']);

Code (markup):

... to implement it. Mind you, Yettabytes might be a bit of overkill, but I'm a firm believer in being complete.