empty_loop         0.013
func()             0.096    0.083
undef_func()       0.096    0.082
int_func()         0.022    0.009
$x = self::$x      0.068    0.055
self::$x = 0       0.063    0.050
isset(self::$x)    0.065    0.052
empty(self::$x)    0.067    0.053
$x = Foo::$x       0.039    0.025
Foo::$x = 0        0.031    0.018
isset(Foo::$x)     0.035    0.022
empty(Foo::$x)     0.037    0.024
self::f()          0.120    0.107
Foo::f()           0.099    0.086
$x = $this->x      0.029    0.016
$this->x = 0       0.029    0.016
$this->x += 2      0.083    0.069
++$this->x         0.057    0.044
--$this->x         0.043    0.030
$this->x++         0.043    0.029
$this->x--         0.043    0.030
isset($this->x)    0.045    0.032
empty($this->x)    0.050    0.037
$this->f()         0.097    0.084
$x = Foo::TEST     0.044    0.031
new Foo()          0.140    0.127
$x = TEST          0.025    0.012
$x = $_GET         0.055    0.042
$x = $GLOBALS['v'] 0.063    0.050
$x = $hash['v']    0.053    0.040
$x = $str[0]       0.042    0.029
$x = $a ?: null    0.038    0.025
$x = $f ?: tmp     0.042    0.029
$x = $f ? $f : $a  0.036    0.023
$x = $f ? $f : tmp 0.036    0.023
------------------------
Total              1.944