Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0264 seconds, (2.348% faster)
The non-referenced test took 1.0998 seconds.
The referenced test took 1.1262 seconds.
Each test case ran 20 random code order iterations consisting of 286,105 loops for a total of 5,722,100 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (1.322) milliseconds per 286,105 loops.
- Total difference 26.44 milliseconds for 5,722,100 loops
The iteration variablity for Code 1 was (5.9318) milliseconds and Code 2 was (5.4406) 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);