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.

Run this test again Return to test menu

Result: Discarded

The test labeled "strtr()" was the faster by 0.0436 seconds, (7.078% faster)

strtr() 100%
str_replace() 92.922%

The strtr() test took 0.5724 seconds.
The str_replace() test took 0.616 seconds.


Each test case ran 20 random code order iterations consisting of 139,542 loops for a total of 2,790,840 runs.

  • Line execution difference (0.000016) milliseconds.
  • Avg difference (2.180) milliseconds per 139,542 loops.
  • Total difference 43.60 milliseconds for 2,790,840 loops

The iteration variablity for Code 1 was (2.0418) milliseconds and Code 2 was (3.3046) 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 (