PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: stripos vs. strtolower(strpos)

Case insensitive search in a string for a set of characters.

Run this test again Return to test menu

Historical Results

Based on (2) saved test runs, The test labeled "stripos()" was (on average) the faster by 0.0095 seconds, (1.160% faster)

stripos() 100%
strtolower(strpos()) 98.84%

The stripos() test took 0.812 seconds.
The strtolower(strpos()) test took 0.8215 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 212,923 loops for a total of 4,258,450 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 212,923 loops.
  • Total difference 9.53 milliseconds for 4,258,450 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) 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(strpos())", was:

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

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)