PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: array_push vs. [] =

According to the documentation, these are equivalent. Past tests have shown otherwise...

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Result: Discarded

The test labeled "$array[] =" was the faster by 0.0612 seconds, (5.068% faster)

$array[] = 100%
array_push() 94.932%

The $array[] = test took 1.1467 seconds.
The array_push() test took 1.2079 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 276,806 loops for a total of 5,536,120 runs.

  • Line execution difference (0.000011) milliseconds.
  • Avg difference (3.061) milliseconds per 276,806 loops.
  • Total difference 61.21 milliseconds for 5,536,120 loops

The iteration variablity for Code 1 was (8.4452) milliseconds and Code 2 was (3.9631) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "array_push()", was:

$array = array();
for ($n = 0; $n < 8; $n++)
{
	for ($i = 0; $i < 50; $i++)
		array_push($array, $i);
}

The second test, "$array[] =", was:

$array = array();
for ($n = 0; $n < 8; $n++)
{
	for ($i = 0; $i < 50; $i++)
		$array[] = $i;
}

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