Test: chr v. pack
Note that this test uses concatenation for many chr()'s vs. one pack(). In a case with many calls to pack(), the result might be different (but this is a less common use.)
Run this test again Return to test menuHistorical Results
Based on (2) saved test runs, The test labeled "chr()" was (on average) the faster by 0.0046 seconds, (0.464% faster)
The chr() test took 0.9835 seconds.
The pack() test took 0.9881 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 256,385 loops for a total of 5,127,690 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.000) milliseconds per 256,385 loops.
- Total difference 4.59 milliseconds for 5,127,690 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, "chr()", was:
$GLOBALS['dummy'] = chr(65) . chr(65) . chr(65) . chr(65);
The second test, "pack()", was:
$GLOBALS['dummy'] = pack('C4', 65, 65, 65, 65);