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POUnexplained PHP/MySQL error. Code works on my test server, but not the permanent server
 

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    <p><a href="http://zeel.dyndns.org/ss/home/" rel="nofollow">http://zeel.dyndns.org/ss/home/</a></p> <p>This is the homepage for my site on my test server, it works great. So do all the other pages. However on my permanent remote server (justhost)</p> <p><a href="http://cvca.ohiofbla.org/store/home/" rel="nofollow">http://cvca.ohiofbla.org/store/home/</a></p> <p>I get:</p> <blockquote> <p>Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in<br> /home/ohiofbl1/public_html/schools/cvca/store/home/index.php on line 43</p> </blockquote> <p>I don't see any problems in the code, and the same code works fine on the testing server.<br> The only difference is that I have an included file that defines variables for SQL user/pass/dbname that are different depending on the server. But the only file that is different is that include file.</p> <p>Am I missing something?</p> <pre><code>&lt;?php session_start(); require("../includes/config.php");?&gt; &lt;?php $title = "Home"; ////////////////////////////////////////////?&gt; &lt;?php require("../includes/head.php"); ///////////////////////////////////////////////////////////////////?&gt; &lt;?php $con = mysql_connect($dbhost,$dbuser,$dbpass); if (!$con) { die('Could not connect: ' . mysql_error()); }?&gt; &lt;div id="index_structure"&gt; &lt;div id="index_left"&gt; &lt;div id="index_top"&gt; &lt;h2&gt;Welcome to the CVCA School Store! &lt;/h2&gt; &lt;p&gt;Here you can purchase items from the school store, and then pick them up from school the next day. &lt;/p&gt; &lt;/div&gt; &lt;div id="index_bottom"&gt; &lt;p align="center"&gt;&lt;img src="../images/School Store 014.png" width="30%" /&gt;&amp;nbsp; &lt;img src="../images/School Store 015.png" width="30%" /&gt;&amp;nbsp; &lt;img src="../images/School Store 016.png" width="30%" /&gt;&lt;/p&gt;&lt;br /&gt; &lt;p&gt;&lt;strong&gt;Hours:&lt;/strong&gt; Mon - Fri, 7:45 - 8:05 AM. On school days. &lt;/p&gt; &lt;p&gt;&lt;strong&gt;Location:&lt;/strong&gt; Corner of west cafe &lt;/p&gt; &lt;p&gt;Backpack sales start in May - August for all new 7th graders. Supplies are available year round.&lt;/p&gt; &lt;p&gt;Empty shoeboxes are accepted for Operation Shoebox at all times. &lt;/p&gt; &lt;p&gt;We are always looking for parent helpers and student employees. &lt;/p&gt; &lt;p&gt;School uniforms are available for fitting purposes. Uniforms are available for purchase at &lt;span class="bluelink"&gt;&lt;a href="http://cvcastore.com/"&gt;cvcastore.com&lt;/a&gt; &lt;/span&gt;&lt;/p&gt; &lt;p&gt;&lt;img src="../images/shirts.png" width="32%" /&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt; &lt;div id="index_sidebar"&gt; &lt;h3 align="left"&gt;Featured items:&lt;/h3&gt;&lt;hr /&gt; &lt;?php function random_one($dbname, $con) { mysql_select_db($dbname, $con); unset($result); unset($col); $i = 1; while($i = 1) { $result = mysql_query("SELECT * FROM items\n"."ORDER BY RAND()\n"."LIMIT 1"); $col = mysql_fetch_array($result); //This is line 43 from the error if (file_exists("../" . $col['ImagePath']) == true) { echo "&lt;h4&gt;&lt;a href='../item/?item=" . $col['ItemNumber'] . "'&gt;" . $col['ItemName'] . "&lt;/h4&gt;&lt;br /&gt; &lt;img src='../" . $col['ImagePath'] . "' border='0' /&gt;&lt;/a&gt;"; break; } } ?&gt;&lt;hr /&gt;&lt;?php } random_one($dbname, $con); random_one($dbname, $con); random_one($dbname, $con); ?&gt;&lt;/div&gt;&lt;/div&gt; &lt;?php require("../includes/foot.php"); ///////////////////////////////?&gt; </code></pre>
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    1. COAnother example of insufficient error checking.
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      1. USIgnacio Vazquez-Abrams
    2. COtry changing line 42 to `$result = mysql_query(...) or die(mysql_error());` to see what's wrong with your query
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      1. USRob
 

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