PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: multiply vs. add

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Result: Discarded

The test labeled "multiply" was the faster by 0.0406 seconds, (3.614% faster)

multiply 100%
add 96.386%

The multiply test took 1.0838 seconds.
The add test took 1.1244 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 284,070 loops for a total of 5,681,400 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (2.032) milliseconds per 284,070 loops.
  • Total difference 40.63 milliseconds for 5,681,400 loops

The iteration variablity for Code 1 was (3.5865) milliseconds and Code 2 was (3.7986) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "multiply", was:

$GLOBALS['dummy'] = 0;
for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy'] = $GLOBALS['dummy_int'] * 2;

The second test, "add", was:

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

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)