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 "strtr()" was the faster by 0.0862 seconds, (7.715% faster)

strtr() 100%
str_replace()/array_keys() 92.285%

The strtr() test took 1.0313 seconds.
The str_replace()/array_keys() test took 1.1175 seconds.


Each test case ran 20 random code order iterations consisting of 210,848 loops for a total of 4,216,960 runs.

  • Line execution difference (0.000020) milliseconds.
  • Avg difference (4.311) milliseconds per 210,848 loops.
  • Total difference 86.22 milliseconds for 4,216,960 loops

The iteration variablity for Code 1 was (9.3215) milliseconds and Code 2 was (12.0523) 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 (