Test: include_once vs. function

Test: include_once vs. function_exists

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Result: Discarded

The test labeled "include_once" was the faster by 0.0661 seconds, (7.385% faster)

include_once 100%

function_exists() 92.615%

The include_once test took 0.8285 seconds.
The function_exists() test took 0.8946 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 213,559 loops for a total of 4,271,180 runs.

Line execution difference (0.000015) milliseconds.
Avg difference (3.303) milliseconds per 213,559 loops.
Total difference 66.07 milliseconds for 4,271,180 loops

The iteration variablity for Code 1 was (2.1913) milliseconds and Code 2 was (5.6439) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "include_once", was:

clearstatcache();

include_once('supplement/func1.inc');

The second test, "function_exists()", was:

clearstatcache();

if (!function_exists('f2'))
	include('supplement/func2.inc');

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