<?php
// twist with php operators 
$var = 0 ;
echo $var++;
              echo PHP_EOL;
echo $var;
              echo PHP_EOL;
echo --$var;
              echo PHP_EOL;
echo (5*5)+10/5;
              echo PHP_EOL;
echo ((5*5)+10)/5;
              echo PHP_EOL;
$var = '8'; // multiply by 2
echo $var << 1; // 8*2
              echo PHP_EOL;
echo $var << 3; // 8*2= 16*2 = 32*2=64
              echo PHP_EOL;
echo $var >> 1; // 8/2=4
              echo PHP_EOL;
$newvar = &$var;
echo $newvar;
$newvar +=6;
              echo PHP_EOL;
echo  $newvar;
              echo PHP_EOL;
echo  $var++;
              echo PHP_EOL;
echo  $newvar;
              echo PHP_EOL;
echo 5-5-5; 
              echo PHP_EOL;
$foo = "wombat"*2;
echo $foo ;
              echo PHP_EOL;
?>

0
1
0
27
7
16
64
4
8
14
14
15
-5
0