Test: fcall vs. callback

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Result: Discarded

The test labeled "callback" was the faster by 0.0499 seconds, (6.648% faster)

callback 100%

fcall 93.352%

The callback test took 0.7013 seconds.
The fcall test took 0.7512 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 138,368 loops for a total of 2,767,360 runs.

Line execution difference (0.000018) milliseconds.
Avg difference (2.497) milliseconds per 138,368 loops.
Total difference 49.94 milliseconds for 2,767,360 loops

The iteration variablity for Code 1 was (5.2984) milliseconds and Code 2 was (4.7716) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "fcall", was:

/*
function do_something($i)
{
	for ($i = 0; $i < 20; $i++)
		$GLOBALS['dummy'] + $i;
}
*/

do_something(74);

The second test, "callback", was:

/*
function do_something($i)
{
	for ($i = 0; $i < 20; $i++)
		$GLOBALS['dummy'] + $i;
}
$GLOBALS['do_something_cb'] = 'do_something';
*/

$GLOBALS['do_something_cb'](74);

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