What is php file? How to open PHP file_PHP tutorial

What file is PHP?

PHP, a nested abbreviation name, is the abbreviation of English "Hypertext Preprocessing Language" (PHP: Hypertext Preprocessor). PHP is an HTML embedded language. PHP is somewhat similar to Microsoft's ASP. Both are "scripting languages ​​embedded in HTML documents" that are executed on the server side. The style of the language is similar to C language. Now It is widely used by many website programmers. PHP's unique syntax is a mix of C, Java, Perl, and PHP's own innovative syntax. It can execute dynamic web pages faster than CGI or Perl. Compared with other programming languages, dynamic pages made with PHP embed the program into the HTML document for execution, and the execution efficiency is much higher than CGI that completely generates HTML tags; compared with the scripting language JavaScript, which is also embedded in the HTML document In contrast, PHP is executed on the server side, taking advantage of the server's performance; the PHP execution engine will also store PHP programs that users frequently access in memory, and other users do not need to compile the program when they access this program once. Just execute the code in the memory directly, which is also one of the manifestations of PHP's high efficiency. PHP has very powerful functions. All CGI or JavaScript functions can be implemented by PHP, and it supports almost all popular databases and operating systems.

How to open PHP file?

Generally speaking, PHP files can be opened with text editing tools such as notepad, emeditor, phpedit, and Dreamwere. It is recommended to use Dreamwer to edit PHP files. If the PHP file you open is all garbled, then this PHP file It is a php file that has been encrypted by zend and cannot be edited or modified, but it can run normally. If you want to run a PHP file, you must install the corresponding php interpreter and web service support. If you want to know how to run PHP files, please see the PHP tutorial