Test: substr on short vs. long strings
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View test history (6) Run this test again Return to test menuResult: Discarded
The test labeled "short" was the faster by 0.0041 seconds, (0.390% faster)
The short test took 1.0513 seconds.
The long (x200) test took 1.0554 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 272,445 loops for a total of 5,448,900 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.206) milliseconds per 272,445 loops.
- Total difference 4.11 milliseconds for 5,448,900 loops
The iteration variablity for Code 1 was (2.2694) milliseconds and Code 2 was (2.0616) milliseconds. The lower and the closer together there values are the more accurate the results are.
Code
The first test, "short", was:
for ($j = 0; $j < 100; $j++) $GLOBALS['dummy2'] = substr($GLOBALS['dummy_short'], 10, 10);
The second test, "long (x200)", was:
for ($j = 0; $j < 100; $j++) $GLOBALS['dummy2'] = substr($GLOBALS['dummy_long'], 10, 10);