empty_loop         0.013
func()             0.110    0.097
undef_func()       0.106    0.093
int_func()         0.045    0.033
$x = self::$x      0.066    0.053
self::$x = 0       0.053    0.040
isset(self::$x)    0.068    0.055
empty(self::$x)    0.067    0.054
$x = Foo::$x       0.044    0.031
Foo::$x = 0        0.029    0.016
isset(Foo::$x)     0.043    0.030
empty(Foo::$x)     0.044    0.031
self::f()          0.109    0.096
Foo::f()           0.096    0.083
$x = $this->x      0.028    0.015
$this->x = 0       0.024    0.011
$this->x += 2      0.039    0.026
++$this->x         0.035    0.022
--$this->x         0.035    0.022
$this->x++         0.049    0.037
$this->x--         0.047    0.034
isset($this->x)    0.044    0.031
empty($this->x)    0.051    0.038
$this->f()         0.096    0.083
$x = Foo::TEST     0.052    0.039
new Foo()          0.114    0.102
$x = TEST          0.027    0.014
$x = $_GET         0.045    0.032
$x = $GLOBALS['v'] 0.081    0.068
$x = $hash['v']    0.061    0.048
$x = $str[0]       0.052    0.039
$x = $a ?: null    0.039    0.026
$x = $f ?: tmp     0.046    0.033
$x = $f ? $f : $a  0.034    0.021
$x = $f ? $f : tmp 0.038    0.025
------------------------
Total              1.929