PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: global vs. local

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Result: Discarded

The test labeled "global" was the faster by 0.0461 seconds, (5.345% faster)

global 100%
local 94.655%

The global test took 0.8161 seconds.
The local test took 0.8622 seconds.


Each test case ran 20 random code order iterations consisting of 182,460 loops for a total of 3,649,200 runs.

  • Line execution difference (0.000013) milliseconds.
  • Avg difference (2.304) milliseconds per 182,460 loops.
  • Total difference 46.08 milliseconds for 3,649,200 loops

The iteration variablity for Code 1 was (5.8283) milliseconds and Code 2 was (7.4419) milliseconds. The lower and the closer together there values are the more accurate the results are.


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 (