Test: substr_compare vs strpos

4800 character string, check if a substring exists in a defined location.

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Result: Discarded

The test labeled "substr_compare" was the faster by 0.018 seconds, (2.399% faster)

substr_compare 100%

strpos 97.601%

The substr_compare test took 0.7331 seconds.
The strpos test took 0.7512 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 210,901 loops for a total of 4,218,020 runs.

Line execution difference (0.000004) milliseconds.
Avg difference (0.901) milliseconds per 210,901 loops.
Total difference 18.02 milliseconds for 4,218,020 loops

The iteration variablity for Code 1 was (0.4062) milliseconds and Code 2 was (1.0530) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "substr_compare", was:

$test = substr_compare($GLOBALS['dummy'], 'ghi', 6, 3) === 0;

The second test, "strpos", was:

$test = strpos($GLOBALS['dummy'], 'ghi', 6) === 6;

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