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    <p>In the line</p> <pre><code>$open = fopen("http://quote.yahoo.com/d/quotes.csv?s=$symbol&amp;f=sl1d1t1c1ohgv&amp;e=.csv", "r"); </code></pre> <p>You need to substitute the actual symbol, not leave it as a string in the query. Maybe something like this:</p> <pre><code>$open = fopen("http://quote.yahoo.com/d/quotes.csv?s=".$symbol."&amp;f=sl1d1t1c1ohgv&amp;e=.csv", "r"); </code></pre> <p>to concatenate the symbol will help.</p> <p>If you have an invalid request, you are probably looking at garbage.</p> <p>Also - you need to make this request before you do any math with it - in other words, you have to compute <code>quote_1</code> before you use the value to compute the profit.</p> <p>Here is a ridiculously simplified version of what I am talking about. See if you understand why this is different than what you did, and how to get back "from here to there":</p> <pre><code>&lt;?php $symbol = "GE"; $entry = 23; $open = fopen("http://quote.yahoo.com/d/quotes.csv?s=".$symbol."&amp;f=sl1d1t1c1ohgv&amp;e=.csv", "r"); $quote = fread($open, 1000); fclose($open); $quote = str_replace("\"", "", $quote); $quote = explode(",", $quote); $lastPrice = (float)$quote[1]; $profit = $lastPrice - $entry; echo "current ".$symbol." quote: ".$lastPrice; echo "; entry: ".$entry."; profit: ".$profit; ?&gt; </code></pre> <p>You can see this in action at <a href="http://www.floris.us/SO/stocks.php" rel="nofollow">http://www.floris.us/SO/stocks.php</a> . I made no attempts at making it pretty - just getting the math right. Right now the output is</p> <pre><code>current GE quote: 23.32; entry: 23; profit: 0.32 </code></pre> <p>I hope it's helpful.</p>
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    1. COHi thanks, I'm not getting any invalid requests, but I am still receiving odd returns. quote_1 comes after it is known from the database that the symbol is what I need from yahoo.
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    2. COOK - but you should not compute the profit until you have a valid quote!
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    3. COI'm quite confused. Is there any way we can go into chat?
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