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 (5) saved test runs, The test labeled "ord()" was (on average) the faster by 0.0254 seconds, (2.941% faster)

ord() 100%

unpack() 97.059%

The ord() test took 0.8389 seconds.
The unpack() test took 0.8644 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 220,688 loops for a total of 4,413,756 runs.

Line execution difference (0.000006) milliseconds.
Avg difference (0.000) milliseconds per 220,688 loops.
Total difference 25.42 milliseconds for 4,413,756 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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