empty_loop         0.013
func()             0.089    0.075
undef_func()       0.096    0.083
int_func()         0.021    0.007
$x = self::$x      0.066    0.053
self::$x = 0       0.063    0.050
isset(self::$x)    0.063    0.049
empty(self::$x)    0.067    0.053
$x = Foo::$x       0.038    0.024
Foo::$x = 0        0.034    0.021
isset(Foo::$x)     0.035    0.022
empty(Foo::$x)     0.042    0.028
self::f()          0.122    0.109
Foo::f()           0.104    0.091
$x = $this->x      0.029    0.016
$this->x = 0       0.030    0.017
$this->x += 2      0.049    0.036
++$this->x         0.042    0.029
--$this->x         0.044    0.031
$this->x++         0.041    0.028
$this->x--         0.042    0.029
isset($this->x)    0.045    0.032
empty($this->x)    0.047    0.034
$this->f()         0.101    0.087
$x = Foo::TEST     0.044    0.031
new Foo()          0.143    0.130
$x = TEST          0.025    0.012
$x = $_GET         0.050    0.037
$x = $GLOBALS['v'] 0.061    0.048
$x = $hash['v']    0.060    0.046
$x = $str[0]       0.045    0.032
$x = $a ?: null    0.042    0.029
$x = $f ?: tmp     0.047    0.034
$x = $f ? $f : $a  0.040    0.026
$x = $f ? $f : tmp 0.037    0.024
------------------------
Total              1.915