Test: commas vs. concat on long strings

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Result: Saved

The test labeled "commas" was the faster by 0.0186 seconds, (2.147% faster)

commas 100%

concat 97.853%

The commas test took 0.8474 seconds.
The concat test took 0.866 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 242,550 loops for a total of 4,851,000 runs.

Line execution difference (0.000004) milliseconds.
Avg difference (0.930) milliseconds per 242,550 loops.
Total difference 18.59 milliseconds for 4,851,000 loops

The iteration variablity for Code 1 was (0.4157) milliseconds and Code 2 was (0.3781) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "commas", was:

echo $GLOBALS['x'], ' test ', $GLOBALS['y'], $GLOBALS['z'], ' test ';

The second test, "concat", was:

echo $GLOBALS['x'] . ' test ' . $GLOBALS['y'] . $GLOBALS['z'] . ' test ';

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