PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: rand vs. mt_rand

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Historical Results

Based on (1) saved test runs, The test labeled "rand()" was (on average) the faster by 0.0041 seconds, (0.885% faster)

rand() 100%
mt_rand() 99.115%

The rand() test took 0.458 seconds.
The mt_rand() test took 0.4621 seconds.


Each test case ran 20 random code order iterations consisting of 128,768 loops for a total of 2,575,360 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 128,768 loops.
  • Total difference 4.09 milliseconds for 2,575,360 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

$GLOBALS['dummy'] = rand(0, 1000);

The second test, "mt_rand()", was:

$GLOBALS['dummy'] = mt_rand(0, 1000);

Running: Linux (x86_64:1 GB) PHP (