Result: DiscardedThe test labeled "referenced" was the faster by 0.0833 seconds, (12.386% faster)
The referenced test took 0.5895 seconds.
The non-referenced test took 0.6729 seconds.
Each test case ran 20 random code order iterations consisting of 140,937 loops for a total of 2,818,740 runs.
- Line execution difference (0.000030) milliseconds.
- Avg difference (4.167) milliseconds per 140,937 loops.
- Total difference 83.34 milliseconds for 2,818,740 loops
The iteration variablity for Code 1 was (6.8658) milliseconds and Code 2 was (4.2042) 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) $v++; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v++; unset($v);