Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0597 seconds, (4.278% faster)
The non-referenced test took 1.336 seconds.
The referenced test took 1.3957 seconds.
Each test case ran 20 random code order iterations consisting of 282,112 loops for a total of 5,642,240 runs.
- Line execution difference (0.000011) milliseconds.
- Avg difference (2.986) milliseconds per 282,112 loops.
- Total difference 59.71 milliseconds for 5,642,240 loops
The iteration variablity for Code 1 was (10.1330) milliseconds and Code 2 was (7.9293) 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) $GLOBALS['dummy'][$k]++; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v++; unset($v);