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 (1) Run this test again Return to test menu

Result: Discarded

The test labeled "strtr()" was the faster by 0.0108 seconds, (0.907% faster)

strtr() 100%
str_replace() 99.093%

The strtr() test took 1.1783 seconds.
The str_replace() test took 1.1891 seconds.


Each test case ran 20 random code order iterations consisting of 268,693 loops for a total of 5,373,860 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.539) milliseconds per 268,693 loops.
  • Total difference 10.79 milliseconds for 5,373,860 loops

The iteration variablity for Code 1 was (12.9073) milliseconds and Code 2 was (8.5639) 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 (