Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0367 seconds, (6.400% faster)
The non-referenced test took 0.5365 seconds.
The referenced test took 0.5731 seconds.
Each test case ran 20 random code order iterations consisting of 132,731 loops for a total of 2,654,620 runs.
- Line execution difference (0.000014) milliseconds.
- Avg difference (1.834) milliseconds per 132,731 loops.
- Total difference 36.68 milliseconds for 2,654,620 loops
The iteration variablity for Code 1 was (5.1586) milliseconds and Code 2 was (6.5897) 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);