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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Historical Results

Based on (4) saved test runs, The test labeled "$array[] =" was (on average) the faster by 0.0204 seconds, (2.827% faster)

$array[] = 100%
array_push() 97.173%

The $array[] = test took 0.7019 seconds.
The array_push() test took 0.7224 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 155,295 loops for a total of 3,105,895 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (0.000) milliseconds per 155,295 loops.
  • Total difference 20.42 milliseconds for 3,105,895 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) 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)