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 0.0049 seconds, (0.689% faster)

rand() 100%
array_rand() 99.311%

The rand() test took 0.7083 seconds.
The array_rand() test took 0.7132 seconds.


Each test case ran 20 random code order iterations consisting of 147,052 loops for a total of 2,941,040 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.246) milliseconds per 147,052 loops.
  • Total difference 4.91 milliseconds for 2,941,040 loops

The iteration variablity for Code 1 was (4.7845) milliseconds and Code 2 was (4.3581) 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 (