How can I get the last 7 characters of a PHP string?

Question

How would I go about grabbing the last 7 characters of the string below?

For example:

$dynamicstring = \"2490slkj409slk5409els\";
$newstring = some_f         


        

Answer 1

It would be better to have a check before getting the string.

$newstring = substr($dynamicstring, -7);

if characters are greater then 7 return last 7 characters else return the provided string.

or do this if you need to return message or error if length is less then 7

$newstring = (strlen($dynamicstring)>7)?substr($dynamicstring, -7):"message";

substr documentation