Files with the extension PHP are Hypertext PreProcessor Script files.
PHP is a scripting language that runs on a web server, producing output in the form of HTML pages. PHP has many features that simplify collaboration with databases such as MySQL, and enables rich web applications such as MySQL. Develop content management systems.
Since PHP is an open source project, it is very widespread and used on many websites. The applications range from simple forms like a form to complex management systems and shops.
Files with the extension PHP can contain pure PHP source code as well as this embedded in an HTML. It is similar to ASP, CGI or JSP.
To edit a PHP file, just use a text editor. But there are also complete development environments, which greatly simplify the development of PHP scripts.
The extension PHP in a URL (in the address line of a browser) indicates that PHP is being used on the website. The user of the website receives only the PHP script generated HTML document not the actual PHP script.
Most often resolving problems with opening PHP files is very simple. Just install an appropriate program that supports such files. All of the listed programs support PHP files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of PHP files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate PHP files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Dreamweaver applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Dreamweaver has been installed.
Sometimes problems with opening PHP files may not lie with the application itself, but can arise due to other causes, such as: