Historical ResultsBased on (3) saved test runs, The test labeled "with key" was (on average) the faster by 0.021 seconds, (2.106% faster)
The with key test took 0.9748 seconds.
The without key test took 0.9958 seconds.
Each test case ran 20 random code order iterations consisting of 265,392 loops for a total of 5,307,847 runs.
- Line execution difference (0.000004) milliseconds.
- Avg difference (0.000) milliseconds per 265,392 loops.
- Total difference 20.97 milliseconds for 5,307,847 loops
The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "with key", was:
foreach ($GLOBALS['dummy'] as $k => $v) $v + array(1);
The second test, "without key", was:
foreach ($GLOBALS['dummy'] as $v) $v + array(1);