Php For Beginners

shadow skazi

Feb 24 2005, 09:20 PM

In creating a php file, you can combine HTML and PHP in one file, but you MUST save it as a .php file if it contains any PHP information. Remember, these tutorials are just for your learning and you should not just copy and paste these into notepad and call it good. You also may realize PHP is alot like the C++ programming language

CODE

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

What the <?php echo '<p>Hello World</p>'; ?> command does is it exports The information between the 's as raw text. So it would display as

CODE

<p>Hello World</p>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Now we will use the echo() command to display what browser the viewer is using, so we can put a big fat banner telling them to switch to Mozilla Firefox

but we don't want to do that because the site would look icky. We don't want to lose traffic, do we?

CODE

<?php echo $_SERVER['HTTP_USER_AGENT']; ?>

An output of this code would be Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) if the user is using Mozilla. What this code does is it gets the broswer information and echos it (displays it) for the viewer.

Now we could use this to our advantage and tell them which browser they are using or if they are not using Mozilla Firefox with this code...

CODE

<?php
if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) {
?>
<p>You are using Internet Explorer</p>
<?php
} else {
?>
<p>You are not using Internet Explorer</p>
<?php
}
?>

The output would be

<p>You are using Internet Explorer</p> or <p>You are not using Internet Explorer</p>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

For this one, you will need two PHP files, one for the action, and one for the HTML.

CODE

That's just simple HTML you would put on a site for a form. You would fill this out and it would display a sentence of "Hi ______, you are __ years old." And this is what we're going to do now. Create a action.php file and put this in it....

CODE

Hi <?php echo $_POST['name']; ?>,
You are <?php echo $_POST['age']; ?> years old.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

And that concludes the noob tutorial for PHP. I hope this has helped you create great websites as it has helped me get hosting credits >_>

++++++++++++++++
Tutorials Copyright
2005 shadow skazi
++++++++++++++++

whyme

Feb 25 2005, 02:07 AM

nice little tutorial.

ill

Feb 25 2005, 02:45 AM

Simple, and great for people who wanna start with PHP. Good job!

Amezis

Feb 25 2005, 10:22 AM

Nice tutorial, and I really need to learn how to use php...

egbakaet

Feb 25 2005, 10:54 PM

Hey, if any of you guys need a mail newsletter script, let me know. I got one that works beautifully and is barely a hassle. Only 3 files needed!

thebluekirby

Feb 25 2005, 11:03 PM

wow... this tuturial can come in handy when I feel like scripting in PHP! thanks!

Ralphie

Feb 25 2005, 11:47 PM

thanks a lot for that tutorial. i am hoping to soon learn php so this is a nice little intro

beeseven

Feb 26 2005, 04:01 AM

You don't need to have two pages for a form. You could just have some HTML then PHP then finish the HTML (pretend the file is called "file.php"):

CODE

<HTML>
<HEAD>
<TITLE>Title</TITLE>
<BODY>
<FORM METHOD="POST" ACTION="file.php">
Name: <INPUT TYPE="text" NAME="name">
<INPUT TYPE="submit">
</FORM>
<?php
echo "Hello, " . $_POST['name'];
?>
</BODY>
</HTML>

NotoriousZach

Feb 26 2005, 05:17 AM

thanks...... Although it seems like every PHP tutorial online is all the same........Hello World, they show u how to get your browser and stuff blah blah......... I wish someone would write a tutorial Step by step telling how to do a certain task, and why they did it. I see too many tutorials that just tell u what to do not why you do it. Seems kinda pointless if you aren't sure why your doing something.

Señor Maniac

Feb 26 2005, 05:28 AM

taken from php.net

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nickmealey

Mar 20 2005, 07:36 AM

nice, I'm going to learn. That got me started, thanx

quiksilver

Mar 20 2005, 07:17 AM

Thank you, this tutorial has been very helpful. I hope to learn more in PHP.

karlo

Mar 13 2005, 02:59 AM

QUOTE(MSTR @ Mar 13 2005, 03:24 AM)

only way to learn php, is to understand atleast the basic of how coding works, not the basics of php but of coding, like understanding arrays, loops, for, if and other statements as well. Understanding variables, and before you get into php, learn to code html by hand.

Yes you are right. Before i am using getenv() function and it's really confusing to use it on if() functions. So, I decided to experiment on $_SERVER and it works. I discovered another thing, echo() is much more faster than print(). And, in arrays example $_SERVER, you can access it's arrays without using " and ' example, $_SERVER[REMOTE_ADDR]

MSTR

Mar 12 2005, 07:24 PM

doom145

Mar 11 2005, 06:58 PM

THIS IS EXCELLTENT FOR N00BS.....I personally aint a n0b at php but this post is amazing. You could have added mor einfo as its like not very self explaining and some of the points of basic php hasnt been covered like how to make a simple script for a certain run program. BTW php is a way of running different things....its like html but html can only concentrate on one site while php has a bit more logic and hence it works out things and runs more websites.......Php...well u have to learn html b4 u learn php as it is super hard....

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Php For Beginners - By Skazi

Php For Beginners - By Skazi

Latest Entries