Test: function vs. class method

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

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Result: Discarded

The test labeled "function" was the faster by 0.0902 seconds, (7.342% faster)

function 100%

class method 92.658%

The function test took 1.1379 seconds.
The class method test took 1.228 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 277,814 loops for a total of 5,556,280 runs.

Line execution difference (0.000016) milliseconds.
Avg difference (4.508) milliseconds per 277,814 loops.
Total difference 90.16 milliseconds for 5,556,280 loops

The iteration variablity for Code 1 was (9.9332) milliseconds and Code 2 was (7.1432) 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);

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