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PHP random_int() Randomosity Tester

TIMEOUT
+27,033 data
+1 +10 +100 +1K +10K +MAX
range: 1-50, data points: 27,034, groups: 41
High / Low / Range / Average
Frequency: 592 / 489 / 103 / 540.68
Rows: 4 / 1 / 3 / 1.22
Frequency
Rows
592
1
584
1
579
1
577
1
573
1
569
1
564
1
559
1
557
1
555
1
554
2
553
1
551
1
549
4
548
1
547
2
546
1
545
1
544
1
543
1
541
1
539
1
538
1
537
2
535
1
534
2
530
2
529
1
528
1
527
1
526
1
525
1
523
1
521
1
519
1
518
1
516
1
513
1
506
2
496
1
489
1

Test runs: 27,034Avg run : 0.000053 seconds Test time: 1.419500 seconds Data Save: 0.005605 seconds Test Tools: Restart test: Random range 1 to: 1 2 3 4 5 10 50 100 500 1K 5K 10K 50K 100K Random Generator Method: SQLite ORDER BY RANDOM() PHP rand() PHP mt_rand() PHP random_int() Back to top


About the Randomosity Tester

This page tests the frequency distribution and timing of random number generation via these methods:

Random number results are stored in a test table. The test table is defined as:

CREATE TABLE 'test' ( 'id' INTEGER PRIMARY KEY, 'frequency' INTEGER DEFAULT '0' );

The table is initialized by creating all rows with frequency = 0. The number of rows in the table is defined by the range setting. The current test is set to use range: 1 to 50.

For each random number chosen, the table is updated via:

UPDATE test SET frequency = frequency + 1 WHERE id = :random_number

For SQLite tests, results are individually generated via the SQL call:

SELECT id FROM test ORDER BY RANDOM() LIMIT 1;

Generate more random numbers by clicking a  +  number button to start a test run.

Each test run is limted to ~1.42 seconds.

A Frequency of Frequencies chart displays:

This site was created with Open Source software. Find out more on Github: randomosity-tester v0.2.2

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