php - Not understanding working filesize() function -

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$path = "/////////.";  echo filesize( $path );

result 4096

what ... fail this? whence 4096 ?

answer:

$path = "/////////.";

although looking weird, path refers root of filesystem, same /, directory. on filesystems directory takes at least 4096 bytes store (what size of 1 sector of harddisk, smallest allocation unit filesystems). size can bigger if there many files stored in directory. in system root there standard system directories, therefore 4096.


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