$ _FILE中的size元素代表什么？

Question

I like to ask something that may be simple and stupid, but I can't find out that information in PHP documentation.

Does the $_FILE['field_name']['size'] field represent the file size in bytes ?

Answer 1

Yes,

http://www.php.net/manual/en/features.file-upload.post-method.php

Answer 2

file uploads info (on php.net)

$_FILES['userfile']['size']
    The size, in bytes, of the uploaded file.