Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0457 seconds, (7.841% faster)
The non-referenced test took 0.5367 seconds.
The referenced test took 0.5824 seconds.
Each test case ran 20 random code order iterations consisting of 133,290 loops for a total of 2,665,800 runs.
- Line execution difference (0.000017) milliseconds.
- Avg difference (2.283) milliseconds per 133,290 loops.
- Total difference 45.67 milliseconds for 2,665,800 loops
The iteration variablity for Code 1 was (1.9806) milliseconds and Code 2 was (3.2737) 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);