[Complete newbie - probability based on an argument?]

A 20% probability means that you have a 20/100 probability of that happening. You can just pick a random number like mt_rand(1, 100) and declare 20 of them the "positive" choice. Assuming that the output of PHP's PRNG is uniformly distributed, you can simply just choose the lower 20.

 

Thus, you should be able to do it like this:

function iCantThinkOfAGoodNameForThisFunction($probability)
{
    return mt_rand(1, 100) <= $probability;
}

 

Then there should be a 20% probability that iCantThinkOfAGoodNameForThisFunction(20) returns true.

 

It helped me a lot, thanks!

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i have the same error, have you fix it already?

[Impersonal Introduction]

LOL!

[Tutorial pls :)]

i just finished studying what you gave me! thanks  

[Tutorial pls :)]

I am a little bit of newbie when it comes to php, can anybody give me a good tutorial site that can enhance my php skills. Thank you in advance. 

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Hi i am John Smith but you can call me smither, hope to learn a lot and get some help here. Thanks! 

[Hello]

LOL deathdreamer, anyways i am also new here. HI!