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 (6) Run this test again Return to test menuResult: Discarded
The test labeled "pack()" was the faster by 0.0136 seconds, (2.688% faster)
The pack() test took 0.494 seconds.
The chr() test took 0.5076 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 134,260 loops for a total of 2,685,200 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (0.682) milliseconds per 134,260 loops.
- Total difference 13.64 milliseconds for 2,685,200 loops
The iteration variablity for Code 1 was (1.2679) milliseconds and Code 2 was (0.7019) 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);