Two ways to get file size in php

static function convert($size) {
 $unit=array('b','kb','mb','gb','tb','pb');
 return @round($size/pow(1024,($i=floor(log($size,1024)))),2).' '.$unit[$i];
 }

2, Method 2 of getting file size in php

/**
 * Returns a human readable filesize
*/
function HumanReadableFilesize($size) {
 $mod = 1024;
 $units = explode(' ','B KB MB GB TB PB' );
 for ($i = 0; $size > $mod; $i++) {
 $size /= $mod;
 }
 return round($size, 2) . ' ' . $units[$i] ;
}