PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strstr vs. strpos

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

Run this test again Return to test menu

Historical Results

Based on (4) saved test runs, The test labeled "strstr()" was (on average) the faster by 0.0218 seconds, (2.902% faster)

strstr() 100%
strpos() 97.098%

The strstr() test took 0.7292 seconds.
The strpos() test took 0.751 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 179,999 loops for a total of 3,599,985 runs.

  • Line execution difference (0.000006) milliseconds.
  • Avg difference (0.000) milliseconds per 179,999 loops.
  • Total difference 21.79 milliseconds for 3,599,985 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, "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;

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