Result: Discarded
The test labeled "include_once" was the faster by 0.0347 seconds, (4.855% faster)
The include_once test took 0.6802 seconds.
The function_exists() test took 0.7149 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 143,138 loops for a total of 2,862,760 runs.
- Line execution difference (0.000012) milliseconds.
- Avg difference (1.735) milliseconds per 143,138 loops.
- Total difference 34.71 milliseconds for 2,862,760 loops
The iteration variablity for Code 1 was (3.7623) milliseconds and Code 2 was (4.5730) 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');