PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

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Historical Results

Based on (2) saved test runs, The test labeled "preg_replace()" was (on average) the faster by 0.0243 seconds, (3.516% faster)

preg_replace() 100%
stri_replace() 96.484%

The preg_replace() test took 0.668 seconds.
The stri_replace() test took 0.6923 seconds.


Each test case ran 20 random code order iterations consisting of 152,521 loops for a total of 3,050,410 runs.

  • Line execution difference (0.000008) milliseconds.
  • Avg difference (0.000) milliseconds per 152,521 loops.
  • Total difference 24.34 milliseconds for 3,050,410 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 (