empty_loop         0.013
func()             0.086    0.073
undef_func()       0.093    0.080
int_func()         0.020    0.007
$x = self::$x      0.067    0.054
self::$x = 0       0.061    0.048
isset(self::$x)    0.064    0.051
empty(self::$x)    0.065    0.052
$x = Foo::$x       0.037    0.024
Foo::$x = 0        0.033    0.021
isset(Foo::$x)     0.034    0.021
empty(Foo::$x)     0.039    0.026
self::f()          0.116    0.103
Foo::f()           0.099    0.086
$x = $this->x      0.027    0.014
$this->x = 0       0.029    0.016
$this->x += 2      0.047    0.035
++$this->x         0.040    0.027
--$this->x         0.044    0.031
$this->x++         0.040    0.028
$this->x--         0.043    0.030
isset($this->x)    0.043    0.030
empty($this->x)    0.047    0.034
$this->f()         0.093    0.080
$x = Foo::TEST     0.042    0.029
new Foo()          0.137    0.124
$x = TEST          0.024    0.011
$x = $_GET         0.048    0.035
$x = $GLOBALS['v'] 0.060    0.047
$x = $hash['v']    0.051    0.039
$x = $str[0]       0.040    0.027
$x = $a ?: null    0.039    0.026
$x = $f ?: tmp     0.040    0.027
$x = $f ? $f : $a  0.035    0.022
$x = $f ? $f : tmp 0.035    0.022
------------------------
Total              1.830