<?php
error_reporting(-1);
echo 9+6;
echo "\n";
$a=9 + 6;
echo ++$a;
echo "\n";
echo 9-6;
echo "\n";
echo 9*6;
echo "\n";
echo 9/6;
echo "\n";
echo 9%6;
echo "\n";
echo 9+6*2;
echo "\n";
echo 9&6*2;
echo "\n";
echo 8&&6*2;
?>