PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: create_function vs. closure outside loop

Using create_function vs anonymous lambda function outside loop

View test history (5) Run this test again Return to test menu

Result: Saved

The test labeled "create_function()" was the faster by 0.0036 seconds, (0.629% faster)

create_function() 100%
lambda 99.371%

The create_function() test took 0.5683 seconds.
The lambda test took 0.5719 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 134,014 loops for a total of 2,680,280 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.180) milliseconds per 134,014 loops.
  • Total difference 3.60 milliseconds for 2,680,280 loops

The iteration variablity for Code 1 was (1.9065) milliseconds and Code 2 was (2.0531) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "lambda", was:

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

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

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

Running: Linux (x86_64:1 GB) PHP (7.2.22-1+ubuntu16.04.1+deb.sury.org+1)