PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: set immediately or later

Is it better to put values inside array() when filling an array or to put values into it later?

View test history (4) Run this test again Return to test menu

Result: Discarded

The test labeled "later" was the faster by 0.0093 seconds, (1.910% faster)

later 100%
immediate 98.09%

The later test took 0.4767 seconds.
The immediate test took 0.486 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 127,351 loops for a total of 2,547,020 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.464) milliseconds per 127,351 loops.
  • Total difference 9.28 milliseconds for 2,547,020 loops

The iteration variablity for Code 1 was (2.2648) milliseconds and Code 2 was (2.0826) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "immediate", was:

for ($i = 0; $i < 10; $i++)
	$GLOBALS['dummy2'] = array(
		0 => 'hello',
		1 => 'good bye',
		2 => 'thank you',
		3 => 'sorry',
	);

The second test, "later", was:

for ($i = 0; $i < 10; $i++)
{
	$GLOBALS['dummy2'] = array();
	$GLOBALS['dummy2'][0] = 'hello';
	$GLOBALS['dummy2'][1] = 'good bye';
	$GLOBALS['dummy2'][2] = 'thank you';
	$GLOBALS['dummy2'][3] = 'sorry';
}

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