Test: fcall vs. callback

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Result: Discarded

The test labeled "fcall" was the faster by 0.0548 seconds, (5.045% faster)

fcall 100%

callback 94.955%

The fcall test took 1.0312 seconds.
The callback test took 1.086 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 283,494 loops for a total of 5,669,880 runs.

Line execution difference (0.000010) milliseconds.
Avg difference (2.739) milliseconds per 283,494 loops.
Total difference 54.79 milliseconds for 5,669,880 loops

The iteration variablity for Code 1 was (1.7938) milliseconds and Code 2 was (4.5064) 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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