PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: global vs. local

No Description

Run this test again Return to test menu

Result: Discarded

The test labeled "global" was the faster by 0.0017 seconds, (0.154% faster)

global 100%
local 99.846%

The global test took 1.0784 seconds.
The local test took 1.08 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 293,770 loops for a total of 5,875,400 runs.

  • Line execution difference (0.000000) milliseconds.
  • Avg difference (0.083) milliseconds per 293,770 loops.
  • Total difference 1.67 milliseconds for 5,875,400 loops

The iteration variablity for Code 1 was (2.5322) milliseconds and Code 2 was (2.3731) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "global", was:

global $dummy;
for ($i = 0; $i < 100; $i++)
	$dummy = $i;

The second test, "local", was:

$dummy = null;
for ($i = 0; $i < 100; $i++)
	$dummy = $i;

Running: Linux (x86_64:1 GB) PHP (7.2.34-18+ubuntu16.04.1+deb.sury.org+1)