play with php

ok, let’s play around with some things recently
First play around with php, this article will be updated at any time
This article is written by a developer who has programming experience in other high-level languages.
PHP supports functional programming, that is, function, and also supports oop

Some similarities and differences

• Use a dot (.) when replacing characters with connections
• There is no such convenient thing as a list, only an array
• Constructor uses __construct
• Variables do not need to be declared, just use them, but they must start with $
• When using object properties or functions, use $obj-> variable name/function name, but please note ,$ appears once is enough, eg:$obj->getAll();

Some practical things

• var_dump(variable) function can display the storage structure of variables, when you don’t When you know what a thing is, just use it to debug it

The above introduces play with php, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.