Operadores De Incremento y Decremento

<?php

echo "OPERADORES INCREMENTO";
$a = 3;


echo "</br>VARIABLE a = $a ";
$a++;
echo "</br>VARIABLE a = $a ";

echo "</br>OPERADORES DECREMENTO";

$b = 34;


echo "</br>VARIABLE a = $b ";
$b--;
echo "</br>VARIABLE a = $b ";



?>