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

Use substr() with a negative number for the 2nd argument.

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

From the php docs:

string substr ( string $string , int $start [, int $length ] )

If start is negative, the returned string will start at the start'th character from the end of string.