get last key of array before php 7.3 code example
Example 1: get key of last element php
//(PHP 7 >= 7.3.0)
$key = array_key_last($data);
//ALL PHP Versions
end($data); // move the internal pointer to the end of the array
$key = key($data); // fetches the key of the element pointed to by the internal pointer
Example 2: php last item of array
echo end(['Gon', 'Killua', 'Hisoka']) // print Hisoka