PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: function vs. class method

Tests for any difference between calling a free function or a member function.

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Historical Results

Based on (1) saved test runs, The test labeled "class method" was (on average) the faster by 0.0103 seconds, (1.879% faster)

class method 100%
function 98.121%

The class method test took 0.5377 seconds.
The function test took 0.548 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 143,677 loops for a total of 2,873,540 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 143,677 loops.
  • Total difference 10.30 milliseconds for 2,873,540 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, "class method", was:

/*
class Example
{
	var $x;

	function foo()
	{
		$this->x = 42;

		return 42;
	}
}
*/

$test = new Example();

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = $test->foo();

The second test, "function", was:

/*
function example_foo(&$array)
{
	$array['x'] = 42;

	return 42;
}
*/

$test = array();

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = example_foo($test);

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