Result: DiscardedThe test labeled "referenced" was the faster by 0.0305 seconds, (2.571% faster)
The referenced test took 1.1546 seconds.
The non-referenced test took 1.1851 seconds.
Each test case ran 20 random code order iterations consisting of 291,625 loops for a total of 5,832,500 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (1.523) milliseconds per 291,625 loops.
- Total difference 30.46 milliseconds for 5,832,500 loops
The iteration variablity for Code 1 was (5.0662) milliseconds and Code 2 was (2.9898) 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);