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

Run this test again Return to test menu

Result: Discarded

The test labeled "str_replace()" was the faster by 0.0159 seconds, (1.560% faster)

str_replace() 100%
strtr() 98.44%

The str_replace() test took 1.0054 seconds.
The strtr() test took 1.0213 seconds.


Each test case ran 20 random code order iterations consisting of 267,536 loops for a total of 5,350,720 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.796) milliseconds per 267,536 loops.
  • Total difference 15.93 milliseconds for 5,350,720 loops

The iteration variablity for Code 1 was (3.3391) milliseconds and Code 2 was (2.5140) 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 (