Bu normal bir davranış ve değiştirilemez: kapanmasından sonra yeni satır ?> hep göz ardı edilir.

Here's the reference, in the FAQ of the PHP manual : Hey, what happened to my newlines?
(quoting, emphasis mine)

<pre>
<?php echo "This should be the first line."; ?>
<?php echo "This should show up after the new line above."; ?>
</pre>

In PHP, the ending for a block of code is either "?>" or "?>\n" (where \n means a newline).
So in the example above, the echoed sentences will be on one line, because PHP omits the newlines after the block ending.
This means that you need to insert an extra newline after each block of PHP code to make it print out one newline.

Why does PHP do this?
Because when formatting normal HTML, this usually makes your life easier because you don't want that newline, but you'd have to create extremely long lines or otherwise make the raw page source unreadable to achieve that effect.

And here are a couple of interesting reads about this :

• Rules pertaining to HTML or whitespace preceding or following PHP tags
• PHP Stripping Newlines
• The history of PHP eating newlines after the closing tag -- goes back to PHP 3 ^^

Bu dilin varsayılan davranış.

Eğer satır sonu gerekiyorsa, komut dosyasının son satırı olarak bir echo "\n" veya echo "<br>" koydu.

(Bkz: Escaping from HTML) davranış tasarlanmıştır:

[...] PHP ?> kapanış etiketleri çarptığında, basitçe (bir sonraki satırsonu karakteri hariç - bkz instruction separation) bulur ne çıktılayacaktır [...]