Is the bottom layer of php c?

Is the bottom layer of php c?

The bottom layer of php is c. PHP was created by Rasmus Lerdorf in 1994. It was just a simple program written in Perl language made by Rasmus Lerdorf to maintain a personal web page. These tools are used to display Rasmus Lerdorf's resume and count web traffic. Later it was rewritten in C language, including access to the database. He integrated these programs with some form interpreters and called them PHP/FI. PHP/FI can be connected to the database to generate simple dynamic web programs.

Main features of php

(1) Open source and free nature

Because the source code of the PHP interpreter is public, there is a safety factor Higher websites can change the PHP interpreter themselves. In addition, the use of the PHP runtime environment is also free.

(2) Quickness

PHP is a language that is very easy to learn and use. Its syntax features are similar to C language, but it does not have the complex address operations of C language. Moreover, the concept of object-oriented is added, and it has concise grammatical rules, making it very simple to operate and edit, and very practical.

(3) Extensibility of database connections

PHP can establish connections with many mainstream databases, such as MySQL, ODBC, Oracle, etc. PHP uses different compiled functions to establish connections with these databases For connection purposes, PHPLIB is a commonly used base library provided for general transactions.

(4) Use process-oriented and object-oriented together

In the use of PHP language, you can use process-oriented and object-oriented respectively, and you can mix PHP process-oriented and object-oriented together. , which is something that many other programming languages ​​cannot do.

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