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 "strstr()" was the faster by 0.0083 seconds, (0.962% faster)

strstr() 100%

strpos() 99.038%

The strstr() test took 0.8598 seconds.
The strpos() test took 0.8681 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 216,564 loops for a total of 4,331,280 runs.

Line execution difference (0.000002) milliseconds.
Avg difference (0.417) milliseconds per 216,564 loops.
Total difference 8.35 milliseconds for 4,331,280 loops

The iteration variablity for Code 1 was (2.8981) milliseconds and Code 2 was (3.3902) 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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