PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: create_function vs. eval

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Historical Results

Based on (1) saved test runs, The test labeled "eval()" was (on average) the faster by 0.021 seconds, (1.895% faster)

eval() 100%
create_function() 98.105%

The eval() test took 1.0882 seconds.
The create_function() test took 1.1092 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 272,844 loops for a total of 5,456,880 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 272,844 loops.
  • Total difference 21.02 milliseconds for 5,456,880 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, "eval()", was:

eval('
	$x = 0;
	$x += 5;

	if ($x >= 5)
		$x = 0;

	$x;
	$x;');

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

/*
$GLOBALS['dummy'] = create_function('', '
	$x = 0;
	$x += 5;

	if ($x >= 5)
		$x = 0;

	$x;
	$x;');
*/

$GLOBALS['dummy']();

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)