Diamondback's PHP introductory notes (1: Introduction to PHP and data types) Size of basic data types Decimal types in mysql database Decimal types in databases

Fortunately, this week I started learning PHP, a programming language that is executed on the server side for the behavioral part of web pages. The full name of PHP is Hypertext Preprocessor. It is a language that is widely used in web programming, especially it can be applied to web pages. Programs are developed and can be embedded in HTML documents, and its syntax is similar to C, Java, and Perl syntax. The purpose of PHP is to enable website developers to quickly write dynamic web pages. The function of PHP is not only to output HTML files, but also to output graphics, PDF files, and Flash files. Of course, you can also let it output some text, such as XHTML and any other XML files. PHP can generate these files and store them on the server. The picture below is about the version development of PHP:
PHP markup style:
1) With "

').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i ').text(i)); }; $numbering.fadeIn(1700); }); });

The above introduces Diamondback's PHP introductory notes (1: PHP introduction and data types), including data types and Diamondback's content. I hope it will be helpful to friends who are interested in PHP tutorials.