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 (4) Run this test again Return to test menu

Result: Discarded

The test labeled "str_replace()" was the faster by 0.0484 seconds, (3.996% faster)

str_replace() 100%
strtr() 96.004%

The str_replace() test took 1.1617 seconds.
The strtr() test took 1.2101 seconds.


Each test case ran 20 random code order iterations consisting of 281,922 loops for a total of 5,638,440 runs.

  • Line execution difference (0.000009) milliseconds.
  • Avg difference (2.418) milliseconds per 281,922 loops.
  • Total difference 48.36 milliseconds for 5,638,440 loops

The iteration variablity for Code 1 was (8.7765) milliseconds and Code 2 was (6.0600) 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 (