Test: foreach reference writing

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Result: Discarded

The test labeled "non-referenced" was the faster by 0.0367 seconds, (6.400% faster)

non-referenced 100%

referenced 93.6%

The non-referenced test took 0.5365 seconds.
The referenced test took 0.5731 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 132,731 loops for a total of 2,654,620 runs.

Line execution difference (0.000014) milliseconds.
Avg difference (1.834) milliseconds per 132,731 loops.
Total difference 36.68 milliseconds for 2,654,620 loops

The iteration variablity for Code 1 was (5.1586) milliseconds and Code 2 was (6.5897) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "non-referenced", was:

foreach ($GLOBALS['dummy'] as $k => $v)
	$v[0]++;
unset($v);

The second test, "referenced", was:

foreach ($GLOBALS['dummy'] as $k => &$v)
	$v[0]++;
unset($v);

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