Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0687 seconds, (6.397% faster)
The non-referenced test took 1.0054 seconds.
The referenced test took 1.0741 seconds.
Each test case ran 20 random code order iterations consisting of 285,229 loops for a total of 5,704,580 runs.
- Line execution difference (0.000012) milliseconds.
- Avg difference (3.435) milliseconds per 285,229 loops.
- Total difference 68.71 milliseconds for 5,704,580 loops
The iteration variablity for Code 1 was (1.1256) milliseconds and Code 2 was (4.6712) 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);