php upload santize file name script code example

Example 1: filesize in php

$file = '/path/to/your/file';
$filesize = filesize($file); // bytes
$filesize = round($filesize / 1024 / 1024, 1); // megabytes with 1 digit
 
echo "The size of your file is $filesize MB.";

Example 2: image upload with name change in php

$temp = explode(".", $_FILES["file"]["name"]);
$newfilename = round(microtime(true)) . '.' . end($temp);
move_uploaded_file($_FILES["file"]["tmp_name"], "../img/imageDirectory/" . $newfilename);