PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strtr vs. str_replace on long strings

String replacement performance on a 37,500 character string.

View test history (2) Run this test again Return to test menu

Result: Discarded

The test labeled "str_replace()" was the faster by 0.0356 seconds, (3.240% faster)

str_replace() 100%
strtr() 96.76%

The str_replace() test took 1.0627 seconds.
The strtr() test took 1.0983 seconds.


Each test case ran 20 random code order iterations consisting of 287,182 loops for a total of 5,743,640 runs.

  • Line execution difference (0.000006) milliseconds.
  • Avg difference (1.779) milliseconds per 287,182 loops.
  • Total difference 35.59 milliseconds for 5,743,640 loops

The iteration variablity for Code 1 was (4.8906) milliseconds and Code 2 was (3.3880) 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 (