PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: float vs. integer addition

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Result: Discarded

The test labeled "float" was the faster by 0.0086 seconds, (1.695% faster)

float 100%
integer 98.305%

The float test took 0.4971 seconds.
The integer test took 0.5056 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 136,800 loops for a total of 2,736,000 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.429) milliseconds per 136,800 loops.
  • Total difference 8.57 milliseconds for 2,736,000 loops

The iteration variablity for Code 1 was (1.5488) milliseconds and Code 2 was (2.0394) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "float", was:

$GLOBALS['dummy'] = 0.0;
for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy'] += $GLOBALS['dummy_float'];

The second test, "integer", was:

$GLOBALS['dummy'] = 0;
for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy'] += $GLOBALS['dummy_int'];

Running: Linux (x86_64:1 GB) PHP (7.2.22-1+ubuntu16.04.1+deb.sury.org+1)