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POEmpty Directory Error Handling
 

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  1. POEmpty Directory Error Handling
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    <p>I would like to know how to do a basic Try Catch block that prints a message if there are no files in a directory</p> <p>This is what I tried:</p> <pre><code>&lt;?php $dbhost = 'localhost'; $dbuser = 'admin'; $dbpass = 'root'; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to mysql'); $dbname = 'files'; mysql_select_db($dbname); mysql_query("TRUNCATE files_tbl"); if ($handle = opendir('./pdf/')) { while (false !== ($file = readdir($handle))) { if ($file != "." &amp;&amp; $file != "..") { if ( ($file = @scandir('./pdf/') &amp;&amp; (count($file) &gt; 0) ) ) { $directory_not_empty = TRUE; } { throw new Exception('No files in database'); } try { @$thelist .= '&lt;font face="Calibri" size="4"&gt;&lt;p&gt;&lt;b&gt;&lt;img src="images/document.png"&gt; '.$file.'&lt;br&gt;&lt;/b&gt;&lt;/p&gt;&lt;/a&gt;&lt;/font&gt;'; $query = "INSERT INTO files.files_tbl(Name) VALUES ('$file');"; mysql_query($query) or die('Error, Insert query failed' . mysql_error()); } catch (Exception $e) { die ($e-&gt;getMessage); } } } closedir($handle); } ?&gt; &lt;html&gt; &lt;head&gt; &lt;link rel="stylesheet" href="style.css" type="text/css"&gt; &lt;title&gt;Search the Database&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;div align="right"&gt;&lt;form action="search.php" method="post"&gt; &lt;div align="left"&gt;&lt;font face="Arial" size="8" &gt;&lt;b&gt;Document Database&lt;/b&gt; &lt;/font&gt;&lt;/div&gt; &lt;font face="Arial" size="5px" &gt;&lt;b&gt; Search: &lt;input type="text" name="term" style="border:1px dashed #216DAB"/&gt;&lt;/b&gt;&lt;/font&gt; &amp;nbsp; &lt;input type="image" src="images/search1.png" name="submit" value="Search" align="right"/&gt; &lt;/form&gt; &lt;hr size="20" noshade="noshade" color="#216DAB"&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; &lt;P&gt;&lt;font face="Arial" Size="6px" color="black" &gt;&lt;b&gt;List of files&lt;/b&gt;&lt;/font&gt;&lt;/p&gt; &lt;P&gt;&lt;center&gt;&lt;table border="0" bgcolor="#E0E0E0" style="border:1px dotted black"&gt;&lt;td&gt;&lt;?=$thelist?&gt;&lt;/td&gt;&lt;/table&gt;&lt;/center&gt;&lt;/p&gt; </code></pre> <p>However I get a PHP error when I load the php page.</p> <pre><code>Notice: Undefined variable: thelist in C:\xampp\htdocs\viewer\list.php on line 76 </code></pre> <p>TryCatch part:</p> <pre><code>while (false !== ($file = readdir($handle))) { if ($file != "." &amp;&amp; $file != "..") { if ( ($file = @scandir('./pdf/') &amp;&amp; (count($file) &gt; 0) ) ) { $directory_not_empty = TRUE; } { throw new Exception('No files in database'); } try { @$thelist .= '&lt;font face="Calibri" size="4"&gt;&lt;p&gt;&lt;b&gt;&lt;img src="images/document.png"&gt; '.$file.'&lt;br&gt;&lt;/b&gt;&lt;/p&gt;&lt;/a&gt;&lt;/font&gt;'; $query = "INSERT INTO files.files_tbl(Name) VALUES ('$file');"; mysql_query($query) or die('Error, Insert query failed' . mysql_error()); } catch (Exception $e) { die ($e-&gt;getMessage); } } } closedir($handle); } </code></pre>
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    1. USLightness Races in Orbit
    1. USBrian
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    1. COThis is just a notice not a php error. PHP is complaining about the variable $thelist, which is directly used to concatenate a string: @$thelist .= '...'; To prevent this notice just add a line where you define the variable: $thelist = '';
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      1. POEmpty Directory Error Handling
      1. USGeorg Henkel
    2. COyep ... add $thelist=''; just after the mysql_query and the warning will disappear
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      1. USneokio
    3. CO@Develman Thanks! But how do I code it in order to display 'No files in database'? I should use a TryCatch no?
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      1. USBrian
 

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