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PORandomly generate numbers based on stock in MySQL database
 

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  1. PORandomly generate numbers based on stock in MySQL database
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    <p>Hi guys I need a bit of help with a script I am making in Php, currently it is setup as a slot style game where users can pay a bit of money and 3 random number are generated, each number links up to a prize they can win. Match 3 and win said prize. </p> <p>Unfortunately as I will not always have every item in stock to give away as a prize I need a way to check through each number and make sure it is in stock</p> <p><code>$stock = $conn -&gt; query('SELECT DISTINCT ItemID FROM codes WHERE Available = 1');</code></p> <p>And if it is in stock add it in an algorithm which will randomly pick the 3 numbers</p> <p>Currently I have a setup like so</p> <pre><code>function generate_numbers(){ global $numbers; $numbers = array( '0' =&gt; rand(1,2), '1' =&gt; rand(1,2), '2' =&gt; rand(1,2) ); display_numbers(); } </code></pre> <p>Which generates numbers based upon two variables and each number links to a prize, obviously it does not take into account which numbers are in stock which will lead to me giving out prizes I dont have, and it does not allow for an edge</p> <p>I need a simple way to check if an item is in stock and if it is stocked it is added to a list of prizes that can be won, I need it to have an edge so some prizes will appear (a lot) more frequently than others based on simple values like code X has a 0.25% chance of appearing and cody Y has a 50% chance of appearing.</p> <p>If i set it up with a larger range of numbers ...</p> <pre><code>function generate_numbers(){ global $numbers; $numbers = array( '0' =&gt; rand(1,100), '1' =&gt; rand(1,100), '2' =&gt; rand(1,100) ); display_numbers(); } </code></pre> <hr> <pre><code>if (($numbers[0] &gt; 0) &amp;&amp; ($numbers[0] &lt; 40)){ echo "you win prize x"; else if (($numbers[0] &gt; 40) &amp;&amp; ($number[0] &lt; 50)){ echo "you win prize y"; else { echo "you win prize z"; } </code></pre> <p>...I am still left either giving out prizes I do not have - or I could add a embedded if else to check if a code is stocked, if it is give it out and if it isn't either give no prize or give a default prize.</p> <p>But this will mean that the more codes I have in stock the higher chance they have of being given which I don't want to do I really want it to be completely fair with predefined odds..</p> <p>So hopefully all that makes sense it's not an overly complex problem but I think quite an unusual one</p> <p>Thanks for reading and I look forward to hearing your ideas</p> <p>Luke</p>
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    1. COReally interesting question :) I'm curious about other answers.
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    2. COI hope you have a proper license to run gambling sites in your country
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