Test: create_function vs. closure inside loop

Using create_function vs anonymous lambda function in a loop

Run this test again Return to test menu

Result: Discarded

The test labeled "create_function()" was the faster by 0.0406 seconds, (3.680% faster)

create_function() 100%

lambda 96.32%

The create_function() test took 1.0637 seconds.
The lambda test took 1.1043 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 287,773 loops for a total of 5,755,460 runs.

Line execution difference (0.000007) milliseconds.
Avg difference (2.032) milliseconds per 287,773 loops.
Total difference 40.64 milliseconds for 5,755,460 loops

The iteration variablity for Code 1 was (1.0612) milliseconds and Code 2 was (2.1356) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "create_function()", was:

$a = $GLOBALS['a'];
for($i = 0; $i < 100; ++$i) {
	$callback = create_function('$n', 'return $n;');
	array_map($callback, $a);
}

The second test, "lambda", was:

$a = $GLOBALS['a'];
for($i = 0; $i < 100; ++$i) {
	$callback2 = function($n) { return $n; };
	array_map($callback2, $a);
}

PHP Benchmarks