PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: rand vs. array_rand (seq keys)

No Description

Run this test again Return to test menu

Historical Results

Based on (2) saved test runs, The test labeled "rand()" was (on average) the faster by 0.0152 seconds, (1.365% faster)

rand() 100%
array_rand() 98.635%

The rand() test took 1.0961 seconds.
The array_rand() test took 1.1112 seconds.


Each test case ran 20 random code order iterations consisting of 288,474 loops for a total of 5,769,480 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 288,474 loops.
  • Total difference 15.16 milliseconds for 5,769,480 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, "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 (