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 0.0323 seconds, (5.727% faster)

global 100%
local 94.273%

The global test took 0.5321 seconds.
The local test took 0.5645 seconds.


Each test case ran 20 random code order iterations consisting of 118,232 loops for a total of 2,364,640 runs.

  • Line execution difference (0.000014) milliseconds.
  • Avg difference (1.616) milliseconds per 118,232 loops.
  • Total difference 32.32 milliseconds for 2,364,640 loops

The iteration variablity for Code 1 was (1.6807) milliseconds and Code 2 was (3.2559) 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 (