Historical Results
Based on (1) saved test runs, The test labeled "mt_rand()" was (on average) the faster by 0.0013 seconds, (0.257% faster)
The mt_rand() test took 0.5146 seconds.
The rand() test took 0.5159 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 131,534 loops for a total of 2,630,680 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.000) milliseconds per 131,534 loops.
- Total difference 1.32 milliseconds for 2,630,680 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.
Code
The first test, "rand()", was:
$GLOBALS['dummy'] = rand(0, 1000);
The second test, "mt_rand()", was:
$GLOBALS['dummy'] = mt_rand(0, 1000);