Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0297 seconds, (3.498% faster)
The non-referenced test took 0.8207 seconds.
The referenced test took 0.8504 seconds.
Each test case ran 20 random code order iterations consisting of 150,765 loops for a total of 3,015,300 runs.
- Line execution difference (0.000010) milliseconds.
- Avg difference (1.487) milliseconds per 150,765 loops.
- Total difference 29.75 milliseconds for 3,015,300 loops
The iteration variablity for Code 1 was (4.9046) milliseconds and Code 2 was (7.9754) 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);