Start with PHP

In PHP echo command is a means of outputting text to the web browser. For example,







<?php



$myString = "Hello!";



echo $myString;



?>
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PHP Installation

Requirements to install the PHP
  • Use PHP version for XAMPP version
  • Updated PHP to 5.6.3
  • Updated MySQL to 5.6.21
  • Updated phpMyAdmin to 4.2.11
  • Update OpenSSL to 1.0.1j
  • New XAMPP welcome page (beta)

After installation Start the XAMPP
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PHP Introduction

PHP is a powerful scripting language that fits gracefully into HTML and puts the tools for creating dynamic websites in the hands of the people — even people like me who were too lazy to learn Perl scripting and other complicated backend 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’s all kinds of excellent reference 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 an HTML embedded language you should have a basic understanding of HTML/XHTML and (a little) JavaScript. In the coming tutorials we will explain the PHP code, but we won’t explain the HTML code (at least not in great detail.)

What is PHP?

  • PHP stands for PHP: Hypertext Preprocessor.
  • As we said before it is a server-side scripting language.
  • PHP is free and is an open source software product.
  • The PHP scripts are executed on the server.
  • PHP supports many databases (MySQL, Sybase, Oracle and many others.)
  • PHP runs on different platforms (Unix, Linux, Windows.)
  • PHP is compatible with almost all web-servers used today (Apache, IIS, etc.)
  • A PHP file can contain plain text, HTML tags and scripts
  • The PHP files can have one of the following extensions: php, php3 or phtml.

There are three main areas where PHP scripts are used.

  • Server-side scripting. This is the most traditional and main target field for PHP. You need three things to make this work. The PHP parser (CGI or server module), a web server and a web browser. You need to run the web server, with a connected PHP installation. You can access the PHP program output with a web browser, viewing the PHP page through the server. All these can run on your home machine if you are just experimenting with PHP programming. See the installation instructions section for more information.

  • Command line scripting. You can make a PHP script to run it without any server or browser. You only need the PHP parser to use it this way. This type of usage is ideal for scripts regularly executed using cron (on *nix or Linux) or Task Scheduler (on Windows). These scripts can also be used for simple text processing tasks. See the section about Command line usage of PHP for more information.

  • Writing desktop applications. PHP is probably not the very best language to create a desktop application with a graphical user interface, but if you know PHP very well, and would like to use some advanced PHP features in your client-side applications you can also use PHP-GTK to write such programs. You also have the ability to write cross-platform applications this way. PHP-GTK is an extension to PHP, not available in the main distribution. If you are interested in PHP-GTK, 

PHP can be used on all major operating systems, including Linux, many Unix variants (including HP-UX, Solaris and OpenBSD), Microsoft Windows, Mac OS X, RISC OS, and probably others. PHP has also support for most of the web servers today. This includes Apache, IIS, and many others. And this includes any web server that can utilize the FastCGI PHP binary, like lighttpd and nginx. PHP works as either a module, or as a CGI processor.  
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