PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: create_function vs. closure outside loop

Using create_function vs anonymous lambda function outside loop

Run this test again Return to test menu

Historical Results

Based on (1) saved test runs, The test labeled "lambda" was (on average) the faster by 0.0026 seconds, (0.266% faster)

lambda 100%
create_function() 99.734%

The lambda test took 0.9576 seconds.
The create_function() test took 0.9601 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 258,031 loops for a total of 5,160,620 runs.

  • Line execution difference (0.000000) milliseconds.
  • Avg difference (0.000) milliseconds per 258,031 loops.
  • Total difference 2.55 milliseconds for 5,160,620 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) 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 (7.2.34-8+ubuntu16.04.1+deb.sury.org+1)