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 (2) Run this test again Return to test menu

Result: Discarded

The test labeled "str_replace()" was the faster by 0.0559 seconds, (6.751% faster)

str_replace() 100%
strtr() 93.249%

The str_replace() test took 0.7722 seconds.
The strtr() test took 0.8281 seconds.


Each test case ran 20 random code order iterations consisting of 191,739 loops for a total of 3,834,780 runs.

  • Line execution difference (0.000015) milliseconds.
  • Avg difference (2.795) milliseconds per 191,739 loops.
  • Total difference 55.90 milliseconds for 3,834,780 loops

The iteration variablity for Code 1 was (4.5747) milliseconds and Code 2 was (2.3102) 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 (