Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0181 seconds, (1.689% faster)
The non-referenced test took 1.0543 seconds.
The referenced test took 1.0724 seconds.
Each test case ran 20 random code order iterations consisting of 255,361 loops for a total of 5,107,220 runs.
- Line execution difference (0.000004) milliseconds.
- Avg difference (0.905) milliseconds per 255,361 loops.
- Total difference 18.11 milliseconds for 5,107,220 loops
The iteration variablity for Code 1 was (3.8117) milliseconds and Code 2 was (4.2102) 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);