empty_loop         0.029
func()             0.029    0.000
undef_func()       0.030    0.000
int_func()         0.051    0.022
$x = self::$x      0.189    0.160
self::$x = 0       0.130    0.101
isset(self::$x)    0.144    0.115
empty(self::$x)    0.139    0.110
$x = Foo::$x       0.093    0.064
Foo::$x = 0        0.063    0.034
isset(Foo::$x)     0.070    0.041
empty(Foo::$x)     0.079    0.050
self::f()          0.028    -0.001
Foo::f()           0.028    -0.001
$x = $this->x      0.069    0.040
$this->x = 0       0.065    0.036
$this->x += 2      0.102    0.073
++$this->x         0.097    0.068
--$this->x         0.096    0.067
$this->x++         0.097    0.068
$this->x--         0.095    0.066
isset($this->x)    0.086    0.057
empty($this->x)    0.099    0.070
$this->f()         0.137    0.108
$x = Foo::TEST     0.118    0.088
new Foo()          0.312    0.283
$x = TEST          0.059    0.030
$x = $_GET         0.117    0.088
$x = $GLOBALS['v'] 0.107    0.077
$x = $hash['v']    0.028    -0.001
$x = $str[0]       0.028    -0.001
$x = $a ?: null    0.029    -0.001
$x = $f ?: tmp     0.028    -0.001
$x = $f ? $f : $a  0.028    -0.001
$x = $f ? $f : tmp 0.028    -0.001
------------------------
Total              2.927