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 (5) saved test runs, The test labeled "strpos()" was (on average) the faster by 0.0137 seconds, (2.125% faster)

strpos() 100%
strstr() 97.875%

The strpos() test took 0.6325 seconds.
The strstr() test took 0.6462 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 136,628 loops for a total of 2,732,560 runs.

  • Line execution difference (0.000005) milliseconds.
  • Avg difference (0.000) milliseconds per 136,628 loops.
  • Total difference 13.73 milliseconds for 2,732,560 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)