PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: foreach key vs. no key

No Description

View test history (2) Run this test again Return to test menu

Result: Discarded

The test labeled "with key" was the faster by 0.0014 seconds, (0.295% faster)

with key 100%
without key 99.705%

The with key test took 0.4652 seconds.
The without key test took 0.4666 seconds.


Each test case ran 20 random code order iterations consisting of 117,462 loops for a total of 2,349,240 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.069) milliseconds per 117,462 loops.
  • Total difference 1.38 milliseconds for 2,349,240 loops

The iteration variablity for Code 1 was (2.0262) milliseconds and Code 2 was (2.6293) 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 (