PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: define constants vs. variables

No Description

View test history (6) Run this test again Return to test menu

Result: Discarded

The test labeled "variables" was the faster by 0.0168 seconds, (2.604% faster)

variables 100%
constants 97.396%

The variables test took 0.6292 seconds.
The constants test took 0.6461 seconds.


Each test case ran 20 random code order iterations consisting of 135,442 loops for a total of 2,708,840 runs.

  • Line execution difference (0.000006) milliseconds.
  • Avg difference (0.841) milliseconds per 135,442 loops.
  • Total difference 16.82 milliseconds for 2,708,840 loops

The iteration variablity for Code 1 was (7.0095) milliseconds and Code 2 was (6.6462) milliseconds. The lower and the closer together there values are the more accurate the results are.


The first test, "constants", was:

define('CONSTANT' . $GLOBALS['i'], $GLOBALS['x'] . $GLOBALS['y'] . $GLOBALS['z']);

The second test, "variables", was:


Running: Linux (x86_64:1 GB) PHP (