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Sophie · 07-08-2009, 05:28 PM

Getting started with php

Getting started in Php

Lets get to know the common, useful functions of Php...

A php file uses an extension of : .php | Example : index.php
When you start a php file you will always use "<?php" to start the script, and to close the script you use "?>".
Example :

PHP Code:

<?php

?>

Php files normally contain HTML tags, just like HTML files, and some php scripting code.

Here is an example of a simple Php script which sends the text "Hello World" to the browser.
Example :

PHP Code:

<html>
<body>
<?php
echo "Hello World";
?>
</body>
</html> 

Each php code line ends with a semicolon ";" this is used to separte one set of instructions to another.

There are two basic statements to output text with PHP: echo and print. In the example above we have used the echo statement to output the text "Hello World".

Note: The file must have a .php extension. If the file has a .html extension, the PHP code will not be executed.

Php Comments

Php comments can be quite important, obviously to help you remember and guide you, but if you release a php file, you normally write about each part of the script.

To start a comment beside/above/below the script you must use "//"
If you are doing more than one line comment you must use "/*" followed by "*/"

Example :

PHP Code:

<html>
<body>
<?php
// This is a single line comment

/*
This is
a comment
on more than
one line
*/

?>

</body>
</html> 

Enjoy, and make sure you don't miss out on the next tutorial..

**~~ffs~~** · (This post was last modified: 07-10-2009 07:10 AM by ffs.)

very useful i think. and more clear than the *How To* guides i have googled Smile

(but still dont get a thing >.<.... examples. wer did u kno to add <body> and what it does)
and
<html> // why this?
<body> // n what this does?
<?php // this i know. it starts the script rite?
echo "Hello World"; // why echo?
?> // this ends the script if im rite
</body> // these again :/
</html> // - || -

Sophie · 07-11-2009, 01:32 PM

(07-10-2009 07:10 AM)ffs Wrote: very useful i think. and more clear than the *How To* guides i have googled

(but still dont get a thing >.<.... examples. wer did u kno to add <body> and what it does)
and
<html> // why this?
<body> // n what this does?
<?php // this i know. it starts the script rite?
echo "Hello World"; // why echo?
?> // this ends the script if im rite
</body> // these again :/
</html> // - || -

Oh Well <html> is like the website code, you always start with when making a full web page.
<body> is the body of the web page.
<?php is the script yes
echo "" prints text

</">
ends code.

imperialknight · 10-30-2011, 11:17 PM

nice tutorial i think ^^