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

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Result: Discarded

The test labeled "str_replace()" was the faster by 0.0224 seconds, (2.132% faster)

str_replace() 100%
strtr() 97.868%

The str_replace() test took 1.0273 seconds.
The strtr() test took 1.0496 seconds.


Each test case ran 20 random code order iterations consisting of 274,451 loops for a total of 5,489,020 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (1.119) milliseconds per 274,451 loops.
  • Total difference 22.38 milliseconds for 5,489,020 loops

The iteration variablity for Code 1 was (4.2756) milliseconds and Code 2 was (2.4713) 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 (