Test: strstr vs. strpos

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

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Result: Discarded

The test labeled "strpos()" was the faster by 0.062 seconds, (5.151% faster)

strpos() 100%

strstr() 94.849%

The strpos() test took 1.1422 seconds.
The strstr() test took 1.2042 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 293,000 loops for a total of 5,860,000 runs.

Line execution difference (0.000011) milliseconds.
Avg difference (3.101) milliseconds per 293,000 loops.
Total difference 62.03 milliseconds for 5,860,000 loops

The iteration variablity for Code 1 was (10.6596) milliseconds and Code 2 was (4.6378) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "strstr()", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = strstr($GLOBALS['dummy'], '3456') != '';

The second test, "strpos()", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = strpos($GLOBALS['dummy'], '3456') !== false;

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