Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0133 seconds, (1.230% faster)
The non-referenced test took 1.0707 seconds.
The referenced test took 1.084 seconds.
Each test case ran 20 random code order iterations consisting of 265,546 loops for a total of 5,310,920 runs.
- Line execution difference (0.000003) milliseconds.
- Avg difference (0.667) milliseconds per 265,546 loops.
- Total difference 13.33 milliseconds for 5,310,920 loops
The iteration variablity for Code 1 was (2.0012) milliseconds and Code 2 was (1.2828) 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);