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 0.039 seconds, (2.498% faster)

rand() 100%
array_rand() 97.502%

The rand() test took 1.5213 seconds.
The array_rand() test took 1.5603 seconds.


Each test case ran 20 random code order iterations consisting of 128,570 loops for a total of 2,571,400 runs.

  • Line execution difference (0.000015) milliseconds.
  • Avg difference (1.949) milliseconds per 128,570 loops.
  • Total difference 38.98 milliseconds for 2,571,400 loops

The iteration variablity for Code 1 was (39.2805) milliseconds and Code 2 was (39.8372) 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 (