Running https://imgs.xkcd.com/comics/types.png in PHP

types.txt

php > var_dump(2+"2");
int(4)
php > var_dump("2"+[]);
PHP Fatal error:  Unsupported operand types in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0

Fatal error: Unsupported operand types in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0

php > var_dump(2/0);
PHP Warning:  Division by zero in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0

Warning: Division by zero in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   22.9712     225184   2. {main}() php shell code:0

bool(false)
php > var_dump((2/0)+2);
PHP Warning:  Division by zero in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0

Warning: Division by zero in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   33.5334     225464   2. {main}() php shell code:0

int(2)
php > var_dump(""+"");
int(0)
php > var_dump([1,2,3]+2);
PHP Fatal error:  Unsupported operand types in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0

Fatal error: Unsupported operand types in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   55.6575     225600   2. {main}() php shell code:0

php > var_dump([1,2,3]+4);
PHP Fatal error:  Unsupported operand types in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0
PHP   3. {main}() php shell code:0

Fatal error: Unsupported operand types in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   55.6575     225600   2. {main}() php shell code:0
   60.8815     226272   3. {main}() php shell code:0

php > var_dump(2/(2-(3/2+1/2)));
PHP Warning:  Division by zero in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0
PHP   3. {main}() php shell code:0
PHP   4. {main}() php shell code:0

Warning: Division by zero in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   55.6575     225600   2. {main}() php shell code:0
   60.8815     226272   3. {main}() php shell code:0
   79.6646     227080   4. {main}() php shell code:0

bool(false)
php > var_dump(range(" "));
PHP Warning:  range() expects at least 2 parameters, 1 given in php shell code on line 1
PHP Stack trace:
PHP   1. {main}() php shell code:0
PHP   2. {main}() php shell code:0
PHP   3. {main}() php shell code:0
PHP   4. {main}() php shell code:0
PHP   5. range() php shell code:1

Warning: range() expects at least 2 parameters, 1 given in php shell code on line 1

Call Stack:
   18.1777     225008   1. {main}() php shell code:0
   55.6575     225600   2. {main}() php shell code:0
   60.8815     226272   3. {main}() php shell code:0
   87.3762     226776   4. {main}() php shell code:0
   87.3762     226872   5. range() php shell code:1

bool(false)
php > var_dump(+2);
int(2)
php > var_dump(2+2);
int(4)
php > var_dump(range(1,5));
array(5) {
  [0] =>
  int(1)
  [1] =>
  int(2)
  [2] =>
  int(3)
  [3] =>
  int(4)
  [4] =>
  int(5)
}
php > var_dump(floor(10.5));
double(10)