empty_loop         0.012
func()             0.104    0.092
undef_func()       0.100    0.088
int_func()         0.043    0.030
$x = self::$x      0.060    0.048
self::$x = 0       0.048    0.036
isset(self::$x)    0.061    0.049
empty(self::$x)    0.061    0.049
$x = Foo::$x       0.039    0.026
Foo::$x = 0        0.024    0.012
isset(Foo::$x)     0.037    0.025
empty(Foo::$x)     0.039    0.026
self::f()          0.111    0.099
Foo::f()           0.097    0.085
$x = $this->x      0.028    0.016
$this->x = 0       0.024    0.012
$this->x += 2      0.039    0.027
++$this->x         0.035    0.022
--$this->x         0.035    0.022
$this->x++         0.047    0.034
$this->x--         0.041    0.029
isset($this->x)    0.044    0.032
empty($this->x)    0.051    0.038
$this->f()         0.097    0.085
$x = Foo::TEST     0.052    0.040
new Foo()          0.114    0.102
$x = TEST          0.027    0.014
$x = $_GET         0.044    0.032
$x = $GLOBALS['v'] 0.077    0.065
$x = $hash['v']    0.056    0.044
$x = $str[0]       0.051    0.038
$x = $a ?: null    0.037    0.025
$x = $f ?: tmp     0.044    0.032
$x = $f ? $f : $a  0.032    0.020
$x = $f ? $f : tmp 0.036    0.024
------------------------
Total              1.849