PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: rand vs. array_rand (odd keys)

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Result: Discarded

The test labeled "array_rand()" was the faster by 0.049 seconds, (4.204% faster)

array_rand() 100%
rand() 95.796%

The array_rand() test took 1.1167 seconds.
The rand() test took 1.1657 seconds.


Each test case ran 20 random code order iterations consisting of 268,392 loops for a total of 5,367,840 runs.

  • Line execution difference (0.000009) milliseconds.
  • Avg difference (2.450) milliseconds per 268,392 loops.
  • Total difference 49.01 milliseconds for 5,367,840 loops

The iteration variablity for Code 1 was (7.8351) milliseconds and Code 2 was (6.0229) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

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