Test: ord v. unpack (str keys)

Does unpack (with its strange format string) go any faster than creating your own associative array?

Historical Results

Based on (2) saved test runs, The test labeled "ord()" was (on average) the faster by 0.0178 seconds, (2.413% faster)

ord() 100%

unpack() 97.587%

The ord() test took 0.7192 seconds.
The unpack() test took 0.737 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 144,138 loops for a total of 2,882,750 runs.

Line execution difference (0.000006) milliseconds.
Avg difference (0.000) milliseconds per 144,138 loops.
Total difference 17.79 milliseconds for 2,882,750 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, "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']);

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