Test: stripos vs. strtolower(substr)

Case insensitive search a string for a set of characters.

View test history (4) Run this test again Return to test menu

Result: Discarded

The test labeled "stripos()" was the faster by 0.0752 seconds, (5.867% faster)

stripos() 100%

strtolower(substr()) 94.133%

The stripos() test took 1.2058 seconds.
The strtolower(substr()) test took 1.281 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 219,654 loops for a total of 4,393,080 runs.

Line execution difference (0.000017) milliseconds.
Avg difference (3.758) milliseconds per 219,654 loops.
Total difference 75.15 milliseconds for 4,393,080 loops

The iteration variablity for Code 1 was (13.7629) milliseconds and Code 2 was (11.9941) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

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

The second test, "strtolower(substr())", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = strtolower(substr($GLOBALS['dummy'], 24, 4) == 'xyz');

PHP Benchmarks