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 0.0101 seconds, (1.016% faster)

strtr() 100%
str_replace() 98.984%

The strtr() test took 0.9802 seconds.
The str_replace() test took 0.9903 seconds.


Each test case ran 20 random code order iterations consisting of 274,541 loops for a total of 5,490,820 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.503) milliseconds per 274,541 loops.
  • Total difference 10.06 milliseconds for 5,490,820 loops

The iteration variablity for Code 1 was (1.7964) milliseconds and Code 2 was (1.0586) 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 (