How to intercept the last four digits of a string in PHP

Sometimes we will encounter the problem of displaying the following digits of a string. How to implement this function?

This article mainly shares with you how to intercept the last four digits of a string in PHP. I hope it can help you.

$str_bh='123456789';$abc=substr($str_bh,-4);
echo $abc;

Output result: 6789

<?php
echo substr("Hello world!",6,5);
?>

Result: world

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