PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: redefine constant

No Description

Run this test again Return to test menu

Historical Results

Based on (5) saved test runs, The test labeled "!defined()" was (on average) the faster by 0.0189 seconds, (1.943% faster)

!defined() 100%
@define() 98.057%

The !defined() test took 0.9546 seconds.
The @define() test took 0.9735 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 221,878 loops for a total of 4,437,560 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 221,878 loops.
  • Total difference 18.91 milliseconds for 4,437,560 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.

Code

The first test, "@define()", was:

@define('CONSTANT', $GLOBALS['dummy']);

The second test, "!defined()", was:

if (!defined('CONSTANT'))
	define('CONSTANT', $GLOBALS['dummy']);

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)