Is there anything like a random function?

[iStriide]

I'm wanting to know if there is a random function in PHP. I am not sure if there is one, but I could I do something where I can make something a have lets say a 25% chance of happening.

 

Example: Can I do anything like this?

25% chance of echoing "Whats Up" or 75% chance of echoing "I hate lag".

 

If there is anything like this any PHP I would appreciate if you guys would tell me how to use it.

[phpSensei]

$variable = array("whats up","whats up","I hate lag","I hate lag","I hate lag");
shuffle($variable);
print $variable[0];

 

thats all i can think of at the moment, my brain is fuzy

[iStriide]

I just tried that out, and it seems like it just goes in order.

[phpSensei]

 

It uses Shuffle, i tried it, the percentage of I hate lag was much higher than whats up,

[iStriide]

Yea I just tested it out a bit more and it seems that way to. I appreciate the help. This should work for what i'm trying to do.

 

[phpSensei]

<?php
$variable = array("whats up","whats up","I hate lag","I hate lag","I hate lag");
$p1 = 0;
$p2 = 0;
for($i=0;$i<=100;$i++){


   shuffle($variable);
   if($variable[0] == "whats up"){ $p1++; } else { $p2++; }
   
   
}
print $p1 . '<br>';
print $p2;
  ?>  

 

 

34 - Whats up
67 - I hate Lag

25- Whats up
76- I hate Lag

37- Whats up
64 - I hate Lag

[MasterACE14]

$arr = array('whats up', 'I hate lag');
$rand = rand(1,25); // 25% chance max
$remainder = 100 - $rand;
echo $arr[0].' : '.$rand.'%<br />';
echo $arr[1].' : '.$remainder.'%<br />';

[phpSensei]

edit: MasterACE14, I like you method.

[phpSensei]

$arr = array('whats up', 'I hate lag');
$rand = rand(1,25); // 25% chance max
$remainder = 100 - $rand;
echo $arr[0].' : '.$rand.'%<br />';
echo $arr[1].' : '.$remainder.'%<br />';

 

I would just to point out that this is not valid. Because Whats up and I Hate lag each half a 50/50 chance of happening in reality, while your only producing percentages not based on the array. OP's question wasn't very clear, because you would need to actually check how many times whats up and i hate lag occur based on the array elements.

 

Just a heads up.

 

I like your method though

[voip03]

phpSensei

Small correction

In your method the total is 101, but if you change the “for loop” counting up to 99 then the total will be 100.

for($i=0;$i<=99;$i++){   

shuffle($variable);
if($variable[0] == "whats up"){ $p1++; } else { $p2++; } 
}

[phpSensei]

i was watching 101 dolmations (sp)