PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: foreach key vs. no key

No Description

Run this test again Return to test menu

Historical Results

Based on (3) saved test runs, The test labeled "with key" was (on average) the faster by 0.021 seconds, (2.106% faster)

with key 100%
without key 97.894%

The with key test took 0.9748 seconds.
The without key test took 0.9958 seconds.


Each test case ran 20 random code order iterations consisting of 265,392 loops for a total of 5,307,847 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 265,392 loops.
  • Total difference 20.97 milliseconds for 5,307,847 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.


The first test, "with key", was:

foreach ($GLOBALS['dummy'] as $k => $v)
	$v + array(1);

The second test, "without key", was:

foreach ($GLOBALS['dummy'] as $v)
	$v + array(1);

Running: Linux (x86_64:1 GB) PHP (