empty_loop         0.013
func()             0.088    0.075
undef_func()       0.097    0.084
int_func()         0.021    0.008
$x = self::$x      0.069    0.056
self::$x = 0       0.064    0.051
isset(self::$x)    0.065    0.052
empty(self::$x)    0.069    0.056
$x = Foo::$x       0.037    0.024
Foo::$x = 0        0.034    0.021
isset(Foo::$x)     0.035    0.022
empty(Foo::$x)     0.041    0.028
self::f()          0.122    0.109
Foo::f()           0.104    0.090
$x = $this->x      0.030    0.017
$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
$this->x--         0.050    0.037
isset($this->x)    0.052    0.039
empty($this->x)    0.051    0.038
$this->f()         0.100    0.087
$x = Foo::TEST     0.045    0.032
new Foo()          0.143    0.130
$x = TEST          0.025    0.012
$x = $_GET         0.050    0.036
$x = $GLOBALS['v'] 0.062    0.049
$x = $hash['v']    0.052    0.039
$x = $str[0]       0.042    0.029
$x = $a ?: null    0.040    0.027
$x = $f ?: tmp     0.042    0.029
$x = $f ? $f : $a  0.036    0.023
$x = $f ? $f : tmp 0.037    0.023
------------------------
Total              1.927