Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0259 seconds, (2.528% faster)
The non-referenced test took 0.998 seconds.
The referenced test took 1.0238 seconds.
Each test case ran 20 random code order iterations consisting of 282,064 loops for a total of 5,641,280 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (1.294) milliseconds per 282,064 loops.
- Total difference 25.88 milliseconds for 5,641,280 loops
The iteration variablity for Code 1 was (1.6986) milliseconds and Code 2 was (2.6037) 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) $v + 1; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v + 1; unset($v);