The filesize effect of UPPERCASE versus lowercase tags

Some guy said uppercase characters require less bytes, so I had to test this:

• Lowercase in iso-8859-1 (368 bytes)
• Uppercase in iso-8859-1 (381 bytes)
• Lowercase in utf-8 (367 bytes)
• Uppercase in utf-8 (380 bytes)

So what's happening here?

Filenames?

Some other guy told me it had to do with the filenames, so I changed those:

• Lowercase in iso-8859-1 (368 bytes)
• Uppercase in iso-8859-1 (381 bytes)
• Lowercase in utf-8 (367 bytes)
• Uppercase in utf-8 (380 bytes)

Still weird..

Compression?

The same guy said it perhaps had to do with the compression. Since the filesize is computed using filesize() I don't think that's it.

Operating system?

This file is served by Windows (at the moment). After copying this entire directory to my Debian server I got the next list:

• Lowercase in iso-8859-1 (368 bytes)
• Uppercase in iso-8859-1 (368 bytes)
• Lowercase in utf-8 (367 bytes)
• Uppercase in utf-8 (367 bytes)

Huh?!

Hmpf, so line endings quite suck. Apparently my editor (Zend Development Environment) just liked saving all lowercase files with \n and all uppercase ones with \r\n. Nice test cases :/

Two files created with Microsoft ® Notepad (very handy tool!):

• Lowercase in iso-8859-1 (381 bytes)
• Uppercase in iso-8859-1 (381 bytes)

So, it's all bullshit :)

Thanks for watching!

After configuring ZDE *cough* correctly, I got the test pages I wanted.