PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: float vs. integer multiplication

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Result: Discarded

The test labeled "integer" was the faster by 0.0161 seconds, (1.306% faster)

integer 100%
float 98.694%

The integer test took 1.2186 seconds.
The float test took 1.2347 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 290,464 loops for a total of 5,809,280 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.806) milliseconds per 290,464 loops.
  • Total difference 16.13 milliseconds for 5,809,280 loops

The iteration variablity for Code 1 was (6.5658) milliseconds and Code 2 was (7.8704) 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 (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)