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 (1) saved test runs, The test labeled "chr()" was (on average) the faster by 0.0136 seconds, (1.251% faster)
The chr() test took 1.0712 seconds.
The pack() test took 1.0848 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 276,259 loops for a total of 5,525,180 runs.
- Line execution difference (0.000002) milliseconds.
- Avg difference (0.000) milliseconds per 276,259 loops.
- Total difference 13.57 milliseconds for 5,525,180 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);