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PHP random_int() Randomosity Tester

+100 data
+1 +10 +100 +1K +10K +MAX
range: 1-10,000, data points: 864,469, groups: 67
High / Low / Range / Average
Frequency: 121 / 53 / 68 / 86.45
Rows: 455 / 1 / 454 / 149.25
Frequency
Rows
121
2
119
3
118
2
117
1
116
8
115
2
114
5
113
5
112
11
111
24
110
21
109
18
108
29
107
38
106
38
105
69
104
75
103
70
102
107
101
118
100
164
99
170
98
214
97
212
96
236
95
304
94
318
93
326
92
344
91
375
90
392
89
378
88
415
87
416
86
455
85
418
84
369
83
414
82
394
81
398
80
334
79
308
78
292
77
288
76
232
75
210
74
178
73
137
72
144
71
117
70
82
69
90
68
73
67
44
66
32
65
17
64
17
63
19
62
9
61
5
60
4
59
1
58
2
57
2
56
1
54
2
53
2

Test runs: 100Avg run : 0.009969 seconds Test time: 0.996857 seconds Data Save: 0.041045 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 10,000.

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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