PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: foreach key vs. no key

No Description

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Historical Results

Based on (1) saved test runs, The test labeled "without key" was (on average) the faster by 0.0155 seconds, (1.257% faster)

without key 100%
with key 98.743%

The without key test took 1.2169 seconds.
The with key test took 1.2323 seconds.


Each test case ran 20 random code order iterations consisting of 257,279 loops for a total of 5,145,580 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 257,279 loops.
  • Total difference 15.49 milliseconds for 5,145,580 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 (