PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: preg_replace vs. stri_replace

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Historical Results

Based on (1) saved test runs, The test labeled "preg_replace()" was (on average) the faster by 0.0115 seconds, (1.880% faster)

preg_replace() 100%
stri_replace() 98.12%

The preg_replace() test took 0.6005 seconds.
The stri_replace() test took 0.612 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 161,583 loops for a total of 3,231,660 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 161,583 loops.
  • Total difference 11.51 milliseconds for 3,231,660 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.

Code

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 (7.2.22-1+ubuntu16.04.1+deb.sury.org+1)