Test: ord v. unpack (str keys)
Does unpack (with its strange format string) go any faster than creating your own associative array?
Run this test again Return to test menuResult: Discarded
The test labeled "ord()" was the faster by 0.0563 seconds, (5.385% faster)
The ord() test took 0.9884 seconds.
The unpack() test took 1.0447 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 283,878 loops for a total of 5,677,560 runs.
- Line execution difference (0.000010) milliseconds.
- Avg difference (2.813) milliseconds per 283,878 loops.
- Total difference 56.26 milliseconds for 5,677,560 loops
The iteration variablity for Code 1 was (0.5896) milliseconds and Code 2 was (3.8168) milliseconds. The lower and the closer together there values are the more accurate the results are.
Code
The first test, "ord()", was:
$GLOBALS['dummy'] = array( 'a' => ord($GLOBALS['packed']{0}), 'b' => ord($GLOBALS['packed']{1}), 'c' => ord($GLOBALS['packed']{2}), 'd' => ord($GLOBALS['packed']{3}), );
The second test, "unpack()", was:
$GLOBALS['dummy'] = unpack('Ca/Cb/Cc/Cd', $GLOBALS['packed']);