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 "immediate" was the faster by 0.0696 seconds, (6.378% faster)

immediate 100%
later 93.622%

The immediate test took 1.0217 seconds.
The later test took 1.0913 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 270,469 loops for a total of 5,409,380 runs.

  • Line execution difference (0.000013) milliseconds.
  • Avg difference (3.480) milliseconds per 270,469 loops.
  • Total difference 69.60 milliseconds for 5,409,380 loops

The iteration variablity for Code 1 was (5.7372) milliseconds and Code 2 was (6.6708) 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)