PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

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Result: Discarded

The test labeled "preg_replace()" was the faster by 0.0113 seconds, (1.043% faster)

preg_replace() 100%
stri_replace() 98.957%

The preg_replace() test took 1.0681 seconds.
The stri_replace() test took 1.0794 seconds.


Each test case ran 20 random code order iterations consisting of 283,926 loops for a total of 5,678,520 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.563) milliseconds per 283,926 loops.
  • Total difference 11.25 milliseconds for 5,678,520 loops

The iteration variablity for Code 1 was (2.4886) milliseconds and Code 2 was (1.4407) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

$GLOBALS['dummy2'] = preg_replace('~(Wheat|Thins)~i', 'Nilla', $GLOBALS['dummy']);

The second test, "stri_replace()", was:

$GLOBALS['dummy2'] = str_ireplace(array('Wheat', 'Thins'), 'Nilla', $GLOBALS['dummy']);

Running: Linux (x86_64:1 GB) PHP (