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 (3) saved test runs, The test labeled "chr()" was (on average) the faster by 0.0147 seconds, (1.677% faster)
The chr() test took 0.8618 seconds.
The pack() test took 0.8765 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 232,640 loops for a total of 4,652,807 runs.
- Line execution difference (0.000003) milliseconds.
- Avg difference (0.000) milliseconds per 232,640 loops.
- Total difference 14.70 milliseconds for 4,652,807 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);