Test: callback vs. if

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Result: Discarded

The test labeled "if" was the faster by 0.0052 seconds, (0.642% faster)

if 100%

callback 99.358%

The if test took 0.8112 seconds.
The callback test took 0.8165 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 188,423 loops for a total of 3,768,460 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.262) milliseconds per 188,423 loops.
Total difference 5.24 milliseconds for 3,768,460 loops

The iteration variablity for Code 1 was (2.5043) milliseconds and Code 2 was (1.1067) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "callback", was:

if ($GLOBALS['dummy'] === 41)
	$cb = 'do_something1';
else
	$cb = 'do_something2';
$cb();

The second test, "if", was:

$v = 'do_something1';
if ($GLOBALS['dummy'] === 41)
	do_something1();
else
	do_something2();

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