Test: callback vs. if

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Result: Discarded

The test labeled "if" was the faster by 0.103 seconds, (9.368% faster)

if 100%

callback 90.632%

The if test took 0.9967 seconds.
The callback test took 1.0997 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 265,294 loops for a total of 5,305,880 runs.

Line execution difference (0.000019) milliseconds.
Avg difference (5.151) milliseconds per 265,294 loops.
Total difference 103.03 milliseconds for 5,305,880 loops

The iteration variablity for Code 1 was (10.1020) milliseconds and Code 2 was (3.1792) 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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