PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: arrays vs. variables

Not that using variables like this is good style, and array1 already mostly answers this.

View test history (1) Run this test again Return to test menu

Result: Discarded

The test labeled "$array[$n]" was the faster by 0.0309 seconds, (5.285% faster)

$array[$n] 100%
${'array_' . $n} 94.715%

The $array[$n] test took 0.5533 seconds.
The ${'array_' . $n} test took 0.5841 seconds.


Each test case ran 20 random code order iterations consisting of 133,215 loops for a total of 2,664,300 runs.

  • Line execution difference (0.000012) milliseconds.
  • Avg difference (1.544) milliseconds per 133,215 loops.
  • Total difference 30.87 milliseconds for 2,664,300 loops

The iteration variablity for Code 1 was (5.2630) milliseconds and Code 2 was (5.6692) milliseconds. The lower and the closer together there values are the more accurate the results are.


The first test, "$array[$n]", was:

$array = array();
for ($i = 0; $i < 100; $i++)
	$array[$i] = $i;

The second test, "${'array_' . $n}", was:

for ($i = 0; $i < 100; $i++)
	${'array_' . $i} = $i;

Running: Linux (x86_64:1 GB) PHP (