Test: multiply vs. add

No Description

Run this test again Return to test menu

Result: Discarded

The test labeled "multiply" was the faster by 0.0465 seconds, (4.248% faster)

multiply 100%

add 95.752%

The multiply test took 1.0491 seconds.
The add test took 1.0956 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 294,595 loops for a total of 5,891,900 runs.

Line execution difference (0.000008) milliseconds.
Avg difference (2.327) milliseconds per 294,595 loops.
Total difference 46.54 milliseconds for 5,891,900 loops

The iteration variablity for Code 1 was (1.4102) milliseconds and Code 2 was (3.2240) 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'];

PHP Benchmarks