What is the use of PHP

[bbb777b7]

I just started to have experience of making web sites. I know html and flash and things like that. I had some experience with javascript.

What is the use of php? also, what is the use of css and javascript?

which one should i learn first?

which is the most useful?

i would like the answers and this would be a good thread to have.

[UberAAZ]

I'm going to run through each of the languages, and give you some sample code for each.

PHP: PHP is used to program websites that can do things automatically. Take my website, UberAAZ.com. When you access it, it accesses a database, gets my posts and the content of the sidebar, then displays it to you.

<?php
//this will display "Hello World" in the browser window
echo "Hello World";
?>

CSS: CSS is used to design pages. You might say "yes, but I can do that in HTML", and you'd be right, but the point of CSS is that if you want to change the design of your website by editing the style sheet you can do it all in one place.

<style type="text/css">
<!--
body,td,th {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: small;
	color: #000000;
}
body {
	background-color: #FFFFFF;
}
-->
</style>

JavaScript: JavaScript is used to do some quite advanced things, such as displaying popups, asking for user input, doing things based on that input, etc. I really don't like this language though (my personal opinion) because if you use a browser that's not called Internet Explorer some of the more advanced stuff will look awful or just plain won't work.

<script language="text/javascript">
location.href="www.blah.com";
</script>

(code above moves to www.blah.com)

Hope that helps,

[web_developer]

man if u want to be web developer
u should be familar with doing static web sites, using html, javascript and flash
in the next stage u can use server side programming like (Php, Asp.net..)

[Troy]

You may also find my post at http://www.daniweb.com/techtalkforums/showthread.php?t=40834&highlight=client-side+javascript+PHP helpful in understanding at a high level the difference between client-side and server-side scripting.

[bbb777b7]

Well, i think I know enough of html and flash and all those static site making skills.

i searched everything online for a good php tutorial but nothing is good. I don't even know if I installed the PHP correctly. I don't know how to open a class i made. can anyone help me?

[Troy]

Do we assume you tried to install PHP on a Windows computer? Which web server? IIS? Apache?

It is difficult to help you without some details like this. If you want accurate, thorough answers, ask accurate, thorough questions. :)

IF you want to get PHP working with Apache on Windows, click the WAMP HOWTO link in my signature below. It will walk you STEP by STEP through installation to configuration to creating a test PHP page to see that everything is working.

[bbb777b7]

I installed IIS, though i did it without using a service disk so i don't know if itz rite. i did install the microsoft service pack though.

i installed the PHP too, but they say i need to find the htdoc, where is that?

srry if i'm an idiot