PHP
is a authoritative scripting verbal that fits elegantly into HTML and puts the
tools for creating active websites in the hands of the people — even people
like me who were too lazy to learn Perl scripting and other difficult backed
hoodoo. This tutorial is for the person who understands HTML but doesn’t know
much about PHP. One of PHP’s greatest attributes is that it’s a freely
distributed open-source language, so there are all kinds of excellent orientation
material about it out there, which means that once you understand the basics,
it’s easy to find the materials that you need to push your skills. PHP is a program that gets
installed on top of your web server software. It works with versions of Apache Microsoft
IIS and other server software packages. You use PHP by inserting PHP code
inside the HTML that makes up your website. When a client (anybody on the web)
visits a web page that contains this code, your server executes it. That’s why
you need to mount your own server in order to test PHP locally — the server is
the brain here, not your browser. Users don’t need any special plug-ins or
anything to see your PHP in action — it gets to the end user as regular
old-fashioned HTML. PHP is a scripting language, like HTML. That means that
code does not need to be compiled before it gets used — it gets administered on
the fly as required. . PHP is an open-source language, and PHP.net is its
control center, with extensive reference material about the language and tips
sent in by users across the globe. PHP.net has exceptional, deep information
about the language, but it can be a little cryptic for the newcomer. We’ll look
more closely at how to use PHP.net at the end of this tutorial. what kinds of
things can PHP do? Well … it can: take info from web-based forms and use it in
a million ways (store it in a folder, create conditional pages liable on what
the forms said, set cookies for later, send e-mail, write your mom on her
birthday); authenticate and track users; run threaded deliberations on your
site; serve different pages to people using different browsers or devices; publish
an entire website using just a single layout template (server-side
includes-style); serve XML pages. But before we can get to the specific uses of
PHP, we need to start with a quick preview of the building blocks of PHP,
beginning with a sample script. This example script is titled “chicken man.php.”
When called by a web browser, it would simply read, “I am the CHICKEN MAN!”
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