Test: substr on short vs. long strings

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Result: Discarded

The test labeled "short" was the faster by 0.0527 seconds, (7.813% faster)

short 100%

long (x200) 92.187%

The short test took 0.6222 seconds.
The long (x200) test took 0.6749 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 146,130 loops for a total of 2,922,600 runs.

Line execution difference (0.000018) milliseconds.
Avg difference (2.637) milliseconds per 146,130 loops.
Total difference 52.73 milliseconds for 2,922,600 loops

The iteration variablity for Code 1 was (4.1410) milliseconds and Code 2 was (6.3023) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "short", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = substr($GLOBALS['dummy_short'], 10, 10);

The second test, "long (x200)", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = substr($GLOBALS['dummy_long'], 10, 10);

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