Best way to determine if a file is empty (php)?

Question

I\'m including a custom.css file in my template to allow site owners to add their own css rules. However, when I ship the file, its empty and there\'s no sense loading it if

Answer 1

file_get_contents() will read the whole file while filesize() uses stat() to determine the file size. Use filesize(), it should consume less disk I/O and much less memory.