Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0332 seconds, (4.479% faster)
The non-referenced test took 0.7075 seconds.
The referenced test took 0.7406 seconds.
Each test case ran 20 random code order iterations consisting of 138,084 loops for a total of 2,761,680 runs.
- Line execution difference (0.000012) milliseconds.
- Avg difference (1.659) milliseconds per 138,084 loops.
- Total difference 33.17 milliseconds for 2,761,680 loops
The iteration variablity for Code 1 was (4.0184) milliseconds and Code 2 was (3.8308) 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);