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 (5) Run this test again Return to test menu

Result: Discarded

The test labeled "strtr()" was the faster by 0.02 seconds, (3.824% faster)

strtr() 100%
str_replace() 96.176%

The strtr() test took 0.504 seconds.
The str_replace() test took 0.524 seconds.


Each test case ran 20 random code order iterations consisting of 136,256 loops for a total of 2,725,120 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (1.002) milliseconds per 136,256 loops.
  • Total difference 20.04 milliseconds for 2,725,120 loops

The iteration variablity for Code 1 was (0.9783) milliseconds and Code 2 was (1.4930) 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 (