$i = $i++; print "Test 1: $i\n"; $i = 0; $i = 0 + $i++; $i = ++$i + $i++; print "Test 2: $i\n"; $i = 0; $i = ++$i + $i++; print "Test 3: $i\n"; $i = 0; $i = $i++ + ++$i; print "Test 4: $i\n"; #### Test 1: 0 Test 2: 3 Test 3: 3 Test 4: 2