php - how to know if a $string ends with ','?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/4764859/how-to-know-if-a-string-ends-with

Answer 1

There are a few options:

if (substr($string, -1) == ',') {

Or (slightly less readable):

if ($string[strlen($string) - 1] == ',') {

Or (even less readable):

if (strrpos($string, ',') == strlen($string) - 1) {

Or (even worse yet):

if (preg_match('/,$/', $string)) {

Or (wow this is bad):

if (end(explode(',', $string)) == '') {

The take away, is just use substr($string, -1) and be done with it. But there are many other alternatives out there...