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 (10) saved test runs, The test labeled "ord()" was (on average) the faster by 0.0116 seconds, (1.216% faster)

ord() 100%

unpack() 98.784%

The ord() test took 0.9443 seconds.
The unpack() test took 0.9559 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 257,637 loops for a total of 5,152,744 runs.

Line execution difference (0.000002) milliseconds.
Avg difference (0.000) milliseconds per 257,637 loops.
Total difference 11.62 milliseconds for 5,152,744 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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