Insert a slash in a string after every number except at the end (PHP)

Question

i've a string

$string;

in this string i have a number, like 3743687

i wish to add a slash after every number, except at the end, so the result will be

3/7/4/3/6/8/7

is there a php function to do this, right ? any advice ? thanks

Answer 1

$string = '3743687';

$newString = implode('/',str_split($string));

var_dump($newString);

Answer 2

$string = "3743687";

$string = implode("/", str_split($string));

echo $string;