What is PHP?
PHP (recursive acronym for PHP: Hypertext
Preprocessor) is a widely-used open source general-purpose
scripting language that is especially suited for web
development and can be embedded into HTML.
Nice, but what does that mean? An example:
Example #1 An introductory example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
echo "Hi, I'm a PHP script!";
Instead of lots of commands to output HTML (as seen in C or Perl),
PHP pages contain HTML with embedded code that does
"something" (in this case, output "Hi, I'm a PHP script!").
The PHP code is enclosed in special start and end processing
that allow you to jump into and out of "PHP mode."
is that the code is executed on the server, generating HTML which
is then sent to the client. The client would receive
the results of running that script, but would not know
what the underlying code was. You can even configure your web server
to process all your HTML files with PHP, and then there's really no
way that users can tell what you have up your sleeve.
The best things in using PHP are that it is extremely simple
for a newcomer, but offers many advanced features for
a professional programmer. Don't be afraid reading the long
list of PHP's features. You can jump in, in a short time, and
start writing simple scripts in a few hours.
Although PHP's development is focused on server-side scripting,
you can do much more with it. Read on, and see more in the
What can PHP do? section,
or go right to the introductory
tutorial if you are only interested in web programming.
4 months ago
In the german translation of the intro is false statement, which describes the implentation of PHP Code in HTML Code as embedding. Actually this is no embedding, because the code gets compiled at Server Side first, after that it is send to the Client, where it renders the page. Because there is no backflow to the code PHP Code itself, it is not embedded in the PHP Code.