PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strtr vs. str_replace/array_keys on long strings

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Result: Discarded

The test labeled "str_replace()/array_keys()" was the faster by 0.0143 seconds, (1.381% faster)

str_replace()/array_keys() 100%
strtr() 98.619%

The str_replace()/array_keys() test took 1.0185 seconds.
The strtr() test took 1.0328 seconds.


Each test case ran 20 random code order iterations consisting of 282,682 loops for a total of 5,653,640 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.713) milliseconds per 282,682 loops.
  • Total difference 14.27 milliseconds for 5,653,640 loops

The iteration variablity for Code 1 was (3.9341) milliseconds and Code 2 was (1.0004) 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 (