使用split或implode拆分PHP变量

Question

I want to split the date variable in php.

Here I declare PHP variable like: $date = 20170501;

and I want the result like this: $date = 2017-05-01

How can I achieve this?

Answer 1

Simple and easy way:

<?php
    echo date('Y-m-d', strtotime("20170501"));
?>

Example: https://eval.in/819801