PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

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Result: Discarded

The test labeled "stri_replace()" was the faster by 0.0198 seconds, (3.700% faster)

stri_replace() 100%
preg_replace() 96.3%

The stri_replace() test took 0.5158 seconds.
The preg_replace() test took 0.5357 seconds.


Each test case ran 20 random code order iterations consisting of 136,234 loops for a total of 2,724,680 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (0.991) milliseconds per 136,234 loops.
  • Total difference 19.82 milliseconds for 2,724,680 loops

The iteration variablity for Code 1 was (3.0553) milliseconds and Code 2 was (1.7214) 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 (