PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: rand vs. array_rand (seq keys)

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Result: Discarded

The test labeled "array_rand()" was the faster by 0.0189 seconds, (1.553% faster)

array_rand() 100%
rand() 98.447%

The array_rand() test took 1.1988 seconds.
The rand() test took 1.2177 seconds.


Each test case ran 20 random code order iterations consisting of 291,321 loops for a total of 5,826,420 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.945) milliseconds per 291,321 loops.
  • Total difference 18.91 milliseconds for 5,826,420 loops

The iteration variablity for Code 1 was (8.7800) milliseconds and Code 2 was (7.3234) 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 (