Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0363 seconds, (5.158% faster)
The non-referenced test took 0.6675 seconds.
The referenced test took 0.7038 seconds.
Each test case ran 20 random code order iterations consisting of 144,893 loops for a total of 2,897,860 runs.
- Line execution difference (0.000013) milliseconds.
- Avg difference (1.815) milliseconds per 144,893 loops.
- Total difference 36.30 milliseconds for 2,897,860 loops
The iteration variablity for Code 1 was (7.8496) milliseconds and Code 2 was (7.3284) 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) $v++; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v++; unset($v);