empty_loop         0.018
func()             0.016    -0.002
undef_func()       0.016    -0.002
int_func()         0.016    -0.002
$x = self::$x      0.079    0.061
self::$x = 0       0.063    0.045
isset(self::$x)    0.075    0.057
empty(self::$x)    0.079    0.061
$x = Foo::$x       0.045    0.027
Foo::$x = 0        0.031    0.013
isset(Foo::$x)     0.038    0.020
empty(Foo::$x)     0.044    0.026
self::f()          0.016    -0.002
Foo::f()           0.016    -0.002
$x = $this->x      0.035    0.017
$this->x = 0       0.038    0.020
$this->x += 2      0.061    0.043
++$this->x         0.050    0.032
--$this->x         0.049    0.031
$this->x++         0.049    0.031
$this->x--         0.050    0.032
isset($this->x)    0.049    0.031
empty($this->x)    0.053    0.035
$this->f()         0.072    0.054
$x = Foo::TEST     0.052    0.034
new Foo()          0.163    0.145
$x = TEST          0.029    0.011
$x = $_GET         0.056    0.038
$x = $GLOBALS['v'] 0.054    0.036
$x = $hash['v']    0.016    -0.002
$x = $str[0]       0.016    -0.002
$x = $a ?: null    0.016    -0.002
$x = $f ?: tmp     0.016    -0.002
$x = $f ? $f : $a  0.016    -0.002
$x = $f ? $f : tmp 0.016    -0.002
------------------------
Total              1.507