PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: rand vs. array_rand (seq keys)

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Result: Discarded

The test labeled "rand()" was the faster by 0.0143 seconds, (1.212% faster)

rand() 100%
array_rand() 98.788%

The rand() test took 1.1674 seconds.
The array_rand() test took 1.1817 seconds.


Each test case ran 20 random code order iterations consisting of 277,034 loops for a total of 5,540,680 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.716) milliseconds per 277,034 loops.
  • Total difference 14.32 milliseconds for 5,540,680 loops

The iteration variablity for Code 1 was (6.5464) milliseconds and Code 2 was (4.5390) milliseconds. The lower and the closer together there values are the more accurate the results are.


The first test, "rand()", was:

$key = rand(0, count($GLOBALS['array']) - 1);
$GLOBALS['dummy'] = $GLOBALS['array'][$key];

The second test, "array_rand()", was:

$key = array_rand($GLOBALS['array'], 1);
$GLOBALS['dummy'] = $GLOBALS['array'][$key];

Running: Linux (x86_64:1 GB) PHP (