->call versus ->bindTo performance

gistfile1.txt

andreas-air:php-src ajf$ time sapi/cli/php -r '$a = function () { return $this->x; }; class FooBar { private $x = 3; } $foobar = new FooBar; for ($i = 0; $i < 100000; $i++) { $x = $a->bindTo($foobar, "FooBar"); $x(); }'

real	0m0.259s
user	0m0.208s
sys	0m0.012s

andreas-air:php-src ajf$ time sapi/cli/php -r '$a = function () { return $this->x; }; $a = $a->bindTo(NULL, "FooBar", true); class FooBar { private $x = 3; } $foobar = new FooBar; for ($i = 0; $i < 100000; $i++) { $a->call($foobar); }'

real	0m0.100s
user	0m0.094s
sys	0m0.005s

// If we up the iterations by 10x, the result is the same:

andreas-air:php-src ajf$ time sapi/cli/php -r '$a = function () { return $this->x; }; class FooBar { private $x = 3; } $foobar = new FooBar; for ($i = 0; $i < 1000000; $i++) { $x = $a->bindTo($foobar, "FooBar"); $x(); }'

real	0m1.966s
user	0m1.959s
sys	0m0.005s

andreas-air:php-src ajf$ time sapi/cli/php -r '$a = function () { return $this->x; }; $a = $a->bindTo(NULL, "FooBar", true); class FooBar { private $x = 3; } $foobar = new FooBar; for ($i = 0; $i < 1000000; $i++) { $a->call($foobar); }'

real	0m0.962s
user	0m0.897s
sys	0m0.015s