PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strstr vs. strpos

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

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Historical Results

Based on (9) saved test runs, The test labeled "strstr()" was (on average) the faster by 0.0071 seconds, (0.915% faster)

strstr() 100%
strpos() 99.085%

The strstr() test took 0.7657 seconds.
The strpos() test took 0.7728 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 195,809 loops for a total of 3,916,184 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 195,809 loops.
  • Total difference 7.07 milliseconds for 3,916,184 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 (7.2.15-1+ubuntu16.04.1+deb.sury.org+1)