What is the difference between post and pre increment ++5 and 5++??

Question

What is the difference between post and pre increment ++5 and 5++??

Answer 1

(++x increase the value and thn update it) like x=5 and ++x
++ = 6 now and thn 6 updated to x so if we print x it will give you output of 6

but

(x++ it update the value like x=5 and x++ so x = 5 and thn it increases it to 1 so =6 but it didn't update rhe value so x still left 5

Answer 2

<?php
echo ++5; //will output 6
echo 5++; // will output 5
?>