In/Decrement operators

Question

<?php
$x = 11;

echo --$x; // The output is 10
echo $x--; // The output is 10
echo $x; // Why this is veriable output is 9
?>

I did not understand why $x out put is 9

plese clearly exappane it why decrese and with show your exampele

Waiting for replay..
bye...

Answer 1

$x-- it first prints its value then decrement occurs and stores the decremented value in memory
--$x it decrements first and stores the decremented value in memory and then prints the value of x

Answer 2

because $x-- first print it's value than minus 1