PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strtr vs. str_replace/array_keys on long strings

No Description

Run this test again Return to test menu

Historical Results

Based on (2) saved test runs, The test labeled "strtr()" was (on average) the faster by 0.0058 seconds, (0.734% faster)

strtr() 100%
str_replace()/array_keys() 99.266%

The strtr() test took 0.7806 seconds.
The str_replace()/array_keys() test took 0.7864 seconds.


Each test case ran 20 random code order iterations consisting of 181,153 loops for a total of 3,623,050 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 181,153 loops.
  • Total difference 5.77 milliseconds for 3,623,050 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.


The first test, "strtr()", was:

strtr($GLOBALS['dummy'], $GLOBALS['replacements']);

The second test, "str_replace()/array_keys()", was:

str_replace(array_keys($GLOBALS['replacements']), $GLOBALS['replacements'], $GLOBALS['dummy']);

Running: Linux (x86_64:1 GB) PHP (