PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: if vs. switch

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Result: Discarded

The test labeled "if elseif else" was the faster by 0.0085 seconds, (1.523% faster)

if elseif else 100%
switch 98.477%

The if elseif else test took 0.549 seconds.
The switch test took 0.5575 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 132,448 loops for a total of 2,648,960 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.424) milliseconds per 132,448 loops.
  • Total difference 8.49 milliseconds for 2,648,960 loops

The iteration variablity for Code 1 was (4.2698) milliseconds and Code 2 was (3.3210) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "if elseif else", was:

foreach ($GLOBALS['dummy'] as $v)
{
	if ($v == 2)
		$GLOBALS['dummy2'] = 1;
	elseif ($v == 5)
		$GLOBALS['dummy2'] = 2;
	elseif ($v == 1)
		$GLOBALS['dummy2'] = 3;
	elseif ($v == 3)
		$GLOBALS['dummy2'] = 4;
	elseif ($v == 0)
		$GLOBALS['dummy2'] = 5;
	else
		$GLOBALS['dummy2'] = 6;
}

The second test, "switch", was:

foreach ($GLOBALS['dummy'] as $v)
{
	switch ($v)
	{
	case 2:
		$GLOBALS['dummy2'] = 1;
		break;

	case 5:
		$GLOBALS['dummy2'] = 2;
		break;

	case 1:
		$GLOBALS['dummy2'] = 3;
		break;

	case 3:
		$GLOBALS['dummy2'] = 4;
		break;

	case 0:
		$GLOBALS['dummy2'] = 5;
		break;

	default:
		$GLOBALS['dummy2'] = 6;
	}
}

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