what is php code

What is the php code?

PHP is "Hypertext Preprocessor" and is a general open source scripting language. PHP is a scripting language executed on the server side. It is similar to C language and is a commonly used website programming language. PHP's unique syntax mixes C, Java, Perl, and PHP's own syntax. It is conducive to learning and widely used. It is mainly suitable for the field of web development.

Code is a source file written by programmers in a language supported by development tools. It is a set of clear rule systems that represent information in a discrete form by characters, symbols or signal symbols.

The principles of code design include unique certainty, standardization and versatility, scalability and stability, ease of identification and memory, striving to be short and consistent in format, and easy to modify, etc. Source code is a branch of code. In a sense, source code is equivalent to code.

In modern programming languages, source code can appear in the form of books or tapes, but the most common format is a text file. The purpose of this typical format is to compile a computer program. The ultimate goal of computer source code is to translate human-readable text into computer-executable binary instructions. This process is called compilation, which is completed by a compiler.

Characteristics of PHP

(1) Open source and free nature

Since the source code of the PHP interpreter is public, the security factor is relatively high High-end 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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