empty_loop         0.012
func()             0.102    0.089
undef_func()       0.099    0.086
int_func()         0.043    0.030
$x = self::$x      0.061    0.049
self::$x = 0       0.050    0.037
isset(self::$x)    0.063    0.050
empty(self::$x)    0.057    0.045
$x = Foo::$x       0.035    0.022
Foo::$x = 0        0.028    0.016
isset(Foo::$x)     0.029    0.017
empty(Foo::$x)     0.032    0.020
self::f()          0.119    0.106
Foo::f()           0.107    0.094
$x = $this->x      0.028    0.016
$this->x = 0       0.024    0.011
$this->x += 2      0.039    0.027
++$this->x         0.036    0.023
--$this->x         0.036    0.024
$this->x++         0.048    0.036
$this->x--         0.047    0.034
isset($this->x)    0.044    0.032
empty($this->x)    0.051    0.038
$this->f()         0.096    0.084
$x = Foo::TEST     0.051    0.038
new Foo()          0.115    0.102
$x = TEST          0.027    0.014
$x = $_GET         0.044    0.032
$x = $GLOBALS['v'] 0.077    0.065
$x = $hash['v']    0.056    0.044
$x = $str[0]       0.051    0.038
$x = $a ?: null    0.037    0.025
$x = $f ?: tmp     0.044    0.032
$x = $f ? $f : $a  0.033    0.020
$x = $f ? $f : tmp 0.036    0.024
------------------------
Total              1.856