Result: DiscardedThe test labeled "referenced" was the faster by 0.017 seconds, (2.318% faster)
The referenced test took 0.7146 seconds.
The non-referenced test took 0.7316 seconds.
Each test case ran 20 random code order iterations consisting of 187,832 loops for a total of 3,756,640 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (0.848) milliseconds per 187,832 loops.
- Total difference 16.96 milliseconds for 3,756,640 loops
The iteration variablity for Code 1 was (2.3972) milliseconds and Code 2 was (1.2963) 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);