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 0.0225 seconds, (4.401% faster)

immediate 100%
later 95.599%

The immediate test took 0.4884 seconds.
The later test took 0.5109 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 119,453 loops for a total of 2,389,060 runs.

  • Line execution difference (0.000009) milliseconds.
  • Avg difference (1.124) milliseconds per 119,453 loops.
  • Total difference 22.48 milliseconds for 2,389,060 loops

The iteration variablity for Code 1 was (2.7621) milliseconds and Code 2 was (4.2617) 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 (7.2.34-21+ubuntu16.04.1+deb.sury.org+1)