PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

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Historical Results

Based on (7) saved test runs, The test labeled "preg_replace()" was (on average) the faster by 0.0255 seconds, (3.333% faster)

preg_replace() 100%
stri_replace() 96.667%

The preg_replace() test took 0.7381 seconds.
The stri_replace() test took 0.7636 seconds.


Each test case ran 20 random code order iterations consisting of 170,787 loops for a total of 3,415,740 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (0.000) milliseconds per 170,787 loops.
  • Total difference 25.45 milliseconds for 3,415,740 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 (