empty_loop         0.013
func()             0.085    0.072
undef_func()       0.093    0.080
int_func()         0.021    0.008
$x = self::$x      0.067    0.054
self::$x = 0       0.066    0.053
isset(self::$x)    0.064    0.051
empty(self::$x)    0.067    0.054
$x = Foo::$x       0.036    0.023
Foo::$x = 0        0.033    0.020
isset(Foo::$x)     0.034    0.021
empty(Foo::$x)     0.041    0.028
self::f()          0.125    0.113
Foo::f()           0.104    0.091
$x = $this->x      0.029    0.016
$this->x = 0       0.030    0.017
$this->x += 2      0.050    0.037
++$this->x         0.043    0.030
--$this->x         0.045    0.032
$this->x++         0.043    0.030
$this->x--         0.045    0.032
isset($this->x)    0.046    0.033
empty($this->x)    0.048    0.035
$this->f()         0.094    0.081
$x = Foo::TEST     0.042    0.029
new Foo()          0.136    0.123
$x = TEST          0.024    0.011
$x = $_GET         0.053    0.040
$x = $GLOBALS['v'] 0.058    0.046
$x = $hash['v']    0.050    0.037
$x = $str[0]       0.040    0.027
$x = $a ?: null    0.038    0.025
$x = $f ?: tmp     0.041    0.028
$x = $f ? $f : $a  0.035    0.022
$x = $f ? $f : tmp 0.036    0.023
------------------------
Total              1.874