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POWeb checking in game, help with the logic of it
 

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  1. POWeb checking in game, help with the logic of it
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    <p>I'm building a web which has a game in it.</p> <p>The game is about getting points for finding certain information in the web.<br> When the user finds a token, a piece of information, does a checking and he/she gets points for that checking. </p> <p>Here's the database I've built so far: </p> <pre><code>CREATE TABLE IF NOT EXISTS `user` ( `userid` int(11) NOT NULL AUTO_INCREMENT, `points` int(11) NOT NULL, PRIMARY KEY (`userid`) ) ENGINE=MyISAM DEFAULT AUTO_INCREMENT=1 ; CREATE TABLE IF NOT EXISTS `checkings` ( `checkingsid` int(11) NOT NULL AUTO_INCREMENT, `userid` int(11) NOT NULL, `tokensid` int(11) NOT NULL, `checked` int(11) NOT NULL, PRIMARY KEY (`checkingsid`) ) ENGINE=MyISAM DEFAULT AUTO_INCREMENT=1 ; CREATE TABLE IF NOT EXISTS `tokens` ( `tid` int(11) NOT NULL AUTO_INCREMENT, `tokensid` int(11) NOT NULL, `name` varchar(255) NOT NULL, `points` int(11) NOT NULL, PRIMARY KEY (`tid`) ) ENGINE=MyISAM DEFAULT AUTO_INCREMENT=1 ; </code></pre> <p>And here's my code. </p> <p>The problem with it is: how do I know if the points have been given already for that token? Please help me with the logic, I've lost my scope and I cannot see the way to do it. I have probably started coding in the wrong direction. I explain what I'm trying to do within the code. </p> <p>Thanks very much </p> <pre><code>&lt;?php //connected to database and obtained $userId and $tokenID already $query0 = "select * from checkings where userid=".$userId." and tokensid=".$tokenId.""; $result0 = mysql_query($query0); $row0 = mysql_fetch_array($result0); if (($row0['checked']!=' ')|| ($row0['checked']!='0')){ // if checked is empty or 0 the user didn't do the checking in this token yet if (($row0['checked']==1)&amp;&amp;($row0['userid']==$userId)&amp;&amp;($row0['tokensid']==$tokenId) ){//the checking has already been inserted //how many points are given for checking in this token? $query2 = "select points from tokens where tokensid='".$tokenId."'"; $result2 = mysql_query($query2); $row2 = mysql_fetch_array($result2); $pointstoken = $row2['points']; //How many points have the user? $query3 = "select points from user where userid='".$userId."'"; $result3 = mysql_query($query3); $row3 = mysql_fetch_array($result3); $pointsUser = $row3['points']; //user points are updated after checking in this token $pointsTotal = $pointsUser+$pointstoken; $query4 = "update user set points=".$pointsTotal." where userid=".$userId." "; $result4 = mysql_query($query4); }else{//here I do the checking in the token inseting the ids plus a 1 as for checked $query1 = "insert into checkings (userid, tokensid,checked ) values (".$userId.",".$tokenId.",1)"; $result1 = mysql_query($query1); } }else{ echo "Hi, user ".$userId." you've already done the checking in token id ".$tokenId." ";} ?&gt; </code></pre>
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