Testing my first PHP Script!! :)

Right now I am trying use the echo statement. This is used as an language construct. Actually I am quite blurr right now. Maybe because I am sleepy due to only sleep 3 hours today.. T_T
Ok, nevermind. I want to paste the simple psp script programming:

<.html>
<.head>
<.title>PHP Test<./title>
<./head>
<.body>
<.?php echo '<.p>Hello World<./p>'; ?>
<./body>
<./html>

First time seeing this script, I taught it was just a simple HTML script. But the different is at the

<.?php echo '<.p>Hello World<./p>';?>

p.s I need to add dot after the "<" so that others can see what I want them to see. ^^ But I still cannot see what is the use of this language construct. Here got some more script about the echo.

I need to come back to this part later to continue. Right now my head is spinning..
If anyone has any easier way to explain this, please help me and those who rite now are trying to figure about this too. For you maybe it is EASY. But for us, is considered as HARD.
Ok then.. I'll be back in the near future.

I will not move before I understand about this part. ^_^

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