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 0.021 seconds, (1.941% faster)
The chr() test took 1.0632 seconds.
The pack() test took 1.0842 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 280,783 loops for a total of 5,615,650 runs.
- Line execution difference (0.000004) milliseconds.
- Avg difference (0.000) milliseconds per 280,783 loops.
- Total difference 21.04 milliseconds for 5,615,650 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);