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.)
View test history (5) Run this test again Return to test menuResult: Discarded
The test labeled "pack()" was the faster by 0.0157 seconds, (1.838% faster)
The pack() test took 0.8361 seconds.
The chr() test took 0.8517 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 207,896 loops for a total of 4,157,920 runs.
- Line execution difference (0.000004) milliseconds.
- Avg difference (0.783) milliseconds per 207,896 loops.
- Total difference 15.65 milliseconds for 4,157,920 loops
The iteration variablity for Code 1 was (6.6651) milliseconds and Code 2 was (5.9234) 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);