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 0.0005 seconds, (0.050% faster)

array_rand() 100%
rand() 99.95%

The array_rand() test took 0.9755 seconds.
The rand() test took 0.976 seconds.


Each test case ran 20 random code order iterations consisting of 242,796 loops for a total of 4,855,920 runs.

  • Line execution difference (0.000000) milliseconds.
  • Avg difference (0.024) milliseconds per 242,796 loops.
  • Total difference 0.49 milliseconds for 4,855,920 loops

The iteration variablity for Code 1 was (4.0318) milliseconds and Code 2 was (4.2400) 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 (