how to separate comma separated values in php code example

Example 1: explode comma php

$myString = "9,[email protected],8";
$myArray = explode(',', $myString);
print_r($myArray);

Example 2: array to string separated by comma php

$arr = array ( 0 => "lorem", 1 => "ipsum", 2 => "dolor");

$str = implode (", ", $arr);