Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0348 seconds, (3.349% faster)
The non-referenced test took 1.0029 seconds.
The referenced test took 1.0377 seconds.
Each test case ran 20 random code order iterations consisting of 290,564 loops for a total of 5,811,280 runs.
- Line execution difference (0.000006) milliseconds.
- Avg difference (1.738) milliseconds per 290,564 loops.
- Total difference 34.75 milliseconds for 5,811,280 loops
The iteration variablity for Code 1 was (0.5127) milliseconds and Code 2 was (1.8867) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "non-referenced", was:
foreach ($GLOBALS['dummy'] as $k => $v) $v + 1; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v + 1; unset($v);