empty_loop         0.016
func()             0.016    0.000
undef_func()       0.016    0.000
int_func()         0.025    0.009
$x = self::$x      0.118    0.102
self::$x = 0       0.100    0.084
isset(self::$x)    0.102    0.086
empty(self::$x)    0.096    0.080
$x = Foo::$x       0.048    0.032
Foo::$x = 0        0.043    0.027
isset(Foo::$x)     0.037    0.021
empty(Foo::$x)     0.038    0.022
self::f()          0.016    0.000
Foo::f()           0.016    0.000
$x = $this->x      0.038    0.022
$this->x = 0       0.040    0.024
$this->x += 2      0.062    0.045
++$this->x         0.053    0.037
--$this->x         0.058    0.042
$this->x++         0.054    0.038
$this->x--         0.059    0.043
isset($this->x)    0.058    0.042
empty($this->x)    0.062    0.046
$this->f()         0.123    0.107
$x = Foo::TEST     0.067    0.051
new Foo()          0.161    0.145
$x = TEST          0.052    0.035
$x = $_GET         0.104    0.087
$x = $GLOBALS['v'] 0.174    0.158
$x = $hash['v']    0.016    0.000
$x = $str[0]       0.016    0.000
$x = $a ?: null    0.016    0.000
$x = $f ?: tmp     0.016    0.000
$x = $f ? $f : $a  0.039    0.023
$x = $f ? $f : tmp 0.017    0.001
------------------------
Total              1.976