Php page payment interface code is annotated with comment code. First download a development package with a demonstration, load these interfaces in the program, and then call these interfaces according to the business logic.

PHP (mbth: PHP: Hypertext Preprocessor, Chinese name: Hypertext Preprocessor) is a universal open source scripting language. Grammar absorbs the characteristics of C language, Java and Perl, which is beneficial to learning and widely used, mainly in the field of Web development. The unique syntax of PHP is a mixture of C, Java, Perl and PHP's own syntax. It can execute dynamic web pages faster than CGI or Perl. Compared with other programming languages, dynamic pages made by PHP embed programs into HTML (an application under standard generalized markup language) documents for execution, and the execution efficiency is much higher than CGI which completely generates HTML tags. PHP can also execute compiled code, which can realize encryption and optimize code operation, making the code run faster.