What are the characteristics of the php programming language?

PHP (PHP: abbreviation of Hypertext Preprocessor, Chinese name: "Hypertext Preprocessor") is a general open source scripting language. The syntax absorbs the characteristics of C language, Java and Perl, has a low entry threshold, is easy to learn, and is widely used. It is mainly suitable for the field of Web development. The file extension of PHP is php.

The features of PHP language include: (Recommended learning: PHP video tutorial)

1. PHP The unique syntax mixes C, Java, Perl and PHP's innovative syntax.

2. PHP supports almost all popular databases and operating systems.

3. PHP can execute dynamic web pages faster than CGI or Perl - in terms of dynamic pages, compared with other programming languages:

PHP embeds programs into HTML documents Execution, execution efficiency is much higher than CGI that completely generates HTML tags;

PHP has very powerful functions, and all CGI functions can be realized by PHP.

4. The most important thing is that PHP can use C and C to expand the program!

5. Scalability: Traditionally, the interaction of web pages is achieved through CGI.

The scalability of CGI programs is not ideal because it opens a separate process for each running CGI program. The solution is to compile the interpreter of the language commonly used to write CGI programs into your web server (such as mod_perl, JSP).

PHP can be installed in this way, although few people are willing to install it in CGI mode. Embedded PHP can be more scalable.

6. Comprehensive functions: PHP includes graphics processing, encoding and decoding, compressed file processing, XML parsing, HTTP authentication, cookie, pop3, snmp, etc.

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