Test: strstr vs. strpos

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

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Result: Saved

The test labeled "strstr()" was the faster by 0.0157 seconds, (1.616% faster)

strstr() 100%

strpos() 98.384%

The strstr() test took 0.9563 seconds.
The strpos() test took 0.972 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 255,594 loops for a total of 5,111,880 runs.

Line execution difference (0.000003) milliseconds.
Avg difference (0.785) milliseconds per 255,594 loops.
Total difference 15.70 milliseconds for 5,111,880 loops

The iteration variablity for Code 1 was (1.0703) milliseconds and Code 2 was (1.0908) 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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