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PHP random_int() Randomosity Tester

TIMEOUT
+14,396 data
+1 +10 +100 +1K +10K +MAX
range: 1-50, data points: 14,397, groups: 36
High / Low / Range / Average
Frequency: 326 / 245 / 81 / 287.94
Rows: 4 / 1 / 3 / 1.39
Frequency
Rows
326
1
317
1
316
1
314
1
313
1
311
1
307
4
305
1
304
1
302
1
300
2
299
1
296
1
294
1
293
2
291
2
289
2
288
1
287
1
285
2
283
2
281
1
280
1
279
2
278
4
277
1
276
2
271
1
270
1
266
1
265
1
264
1
260
1
258
1
256
1
245
1

Test runs: 14,397Avg run : 0.000099 seconds Test time: 1.419476 seconds Data Save: 0.008947 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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