Question

How to generate a random integer value in PHP

Answer 1

echo rand() . "<br />";
echo rand() . "<br />";
echo rand() . "<br />";

/*
run:

18542
2831
30620

*/

 

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Answer 2

for ($i = 0; $i < 20; $i++)
{
    $n = rand(2, 9);
    echo $n . "<br/>";
}
    
/*
run:

9
7
7
8
4
7
6
3
2
9
6
2
2
9
2
9
2
2
8
     
*/

 

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Answer 3

for ($i = 0; $i < 20; $i++)
{
    $n = rand(0, getrandmax());
    echo $n . "<br/>";
}
    
/*
run:

27969
742
39
8916
7293
26482
30659
6208
889
2238
19743
30828
24117
29386
7227
12120
10417
29078
16663
26884
     
*/

 

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Answer 4

for ($i = 0; $i < 20; $i++)
{
    echo mt_rand() . "<br/>";  // mt_rand() - Generate better random value
}
    
/*
run:

1593017367
1505266617
230869714
859889888
1330131806
95219024
780358501
666847360
1108311232
1190539088
1312662444
1537601971
1950352743
294675368
1798718792
980711402
629403232
1025377933
866511936
1107791016
     
*/

 

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Answer 5

for ($i = 0; $i < 20; $i++)
{
    echo mt_rand(0, mt_getrandmax()) . "<br/>";  // mt_rand() - Generate better random value
}
    
/*
run:

1931835025
1638704171
318262754
337344026
22731420
1029282866
1905830281
479038614
1582753727
633940063
801466444
58785175
936459425
1875809263
1426194725
889657451
1514011931
541808180
2077503657
970109280
     
*/

 

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