PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strtr vs. str_replace on short strings

The short string in this test is 750 characters long with 10 occurances of the replacement

View test history (1) Run this test again Return to test menu

Result: Discarded

The test labeled "strtr()" was the faster by 0.0053 seconds, (0.485% faster)

strtr() 100%
str_replace() 99.515%

The strtr() test took 1.0935 seconds.
The str_replace() test took 1.0988 seconds.


Each test case ran 20 random code order iterations consisting of 279,480 loops for a total of 5,589,600 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.266) milliseconds per 279,480 loops.
  • Total difference 5.32 milliseconds for 5,589,600 loops

The iteration variablity for Code 1 was (5.3600) milliseconds and Code 2 was (3.9569) milliseconds. The lower and the closer together there values are the more accurate the results are.


The first test, "strtr()", was:

strtr($GLOBALS['dummy'], array('string' => 'STRING!'));

The second test, "str_replace()", was:

str_replace('string', 'STRING!', $GLOBALS['dummy']);

Running: Linux (x86_64:1 GB) PHP (