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PHP random_int() Randomosity Tester

TIMEOUT
+22,814 data
+1 +10 +100 +1K +10K +MAX
range: 1-50, data points: 22,815, groups: 40
High / Low / Range / Average
Frequency: 502 / 407 / 95 / 456.30
Rows: 3 / 1 / 2 / 1.25
Frequency
Rows
502
1
494
1
493
1
492
1
488
1
487
3
486
2
472
1
470
2
469
1
468
1
467
1
463
1
462
1
460
1
459
1
458
1
457
2
454
1
453
3
452
1
451
1
450
1
449
1
448
2
447
1
446
3
445
1
444
1
442
1
438
1
436
1
435
1
433
1
427
1
424
1
423
1
420
1
411
1
407
1

Test runs: 22,815Avg run : 0.000062 seconds Test time: 1.419543 seconds Data Save: 0.088726 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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