Question

How to generate a random float numbers between 0 (0.0...) to 1 (0.9...) in PHP

Answer 1

for ($i = 0; $i < 30; $i++) {
      echo (float)rand() / (float)getrandmax() . "<br />"; 
}

 
 
   
/*
run:
        
0.74954692588632
0.13201814570093
0.91698365887487
0.042013413292362
0.6246805277768
0.97397961280028
0.082777827085358
0.80771824149774
0.59785135770117
0.4976555320889
0.63084494305348
0.68237553754932
0.74897585657843
0.99123260704392
0.44883407207617
0.67367195835042
0.37594135123116
0.87776778353274
0.32442348605228
0.020404045013899
0.85170671662861
0.59984983624883
0.25649896974512
0.74152220401052
0.12057481246096
0.81131554293042
0.50115890451761
0.11926282389055
0.34064717234142
0.45887394131109
 
*/

 

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Answer 2

for ($i = 0; $i < 40; $i++) {
      echo number_format((float)rand() / (float)getrandmax(), 2, ".", "") . "<br />"; 
}

 
 
   
/*
run:
        
0.12
0.39
0.31
0.95
0.89
0.68
0.01
0.97
0.35
0.21
0.22
0.47
0.14
0.86
0.01
0.59
0.30
0.04
0.39
0.08
0.76
0.18
0.54
0.07
0.34
0.17
0.95
0.11
0.87
0.22
0.90
0.80
0.34
0.36
0.94
0.01
0.49
0.18
0.38
0.21
 
*/

 

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