How to use php variable function

This article will explain in detail how to use the php variable function. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Detailed explanation of php variable function

Explanation: if you add parentheses to a variable, the PHP system will parse it into a function. The value of this variable must be the name of a function, otherwise an error will be reported.

The function of php variable function: reduce the amount of code

/ / variable function $a = 'sum';function sum ($num1,$num2) {return $num1+$num2;} / / the variable name is parenthesized, and the php system will solve the function, which will be called if there is a function whose current variable value is named. $sum = $a (1p2) echo $sum; / / 3 this is the end of the article on "how to use php variable functions". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.