PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

No Description

Run this test again Return to test menu

Historical Results

Based on (6) saved test runs, The test labeled "preg_replace()" was (on average) the faster by 0.0168 seconds, (2.138% faster)

preg_replace() 100%
stri_replace() 97.862%

The preg_replace() test took 0.771 seconds.
The stri_replace() test took 0.7879 seconds.


Each test case ran 20 random code order iterations consisting of 205,412 loops for a total of 4,108,243 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 205,412 loops.
  • Total difference 16.85 milliseconds for 4,108,243 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.


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 (