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 0.0515 seconds, (4.567% faster)

rand() 100%
array_rand() 95.433%

The rand() test took 1.0754 seconds.
The array_rand() test took 1.1269 seconds.


Each test case ran 20 random code order iterations consisting of 294,906 loops for a total of 5,898,120 runs.

  • Line execution difference (0.000009) milliseconds.
  • Avg difference (2.573) milliseconds per 294,906 loops.
  • Total difference 51.46 milliseconds for 5,898,120 loops

The iteration variablity for Code 1 was (2.7275) milliseconds and Code 2 was (6.0725) 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 (