Test: callback vs. if

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Result: Discarded

The test labeled "callback" was the faster by 0.011 seconds, (1.592% faster)

callback 100%

if 98.408%

The callback test took 0.6828 seconds.
The if test took 0.6939 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 149,038 loops for a total of 2,980,760 runs.

Line execution difference (0.000004) milliseconds.
Avg difference (0.552) milliseconds per 149,038 loops.
Total difference 11.05 milliseconds for 2,980,760 loops

The iteration variablity for Code 1 was (7.3118) milliseconds and Code 2 was (7.5642) 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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