Invalid argument supplied for foreach()
<p>The code down below delete files inside the folder " Images " every 60 seconds, it works, but when the folder is empty it says: Warning: Invalid argument supplied for foreach()
How can that be fixed like if there is no files, say " folder empty instead of that warning..</p>

<pre><code>&lt;?php
$expiretime=1; 

$tmpFolder="Images/";
$fileTypes="*.*";

foreach (glob($tmpFolder . $fileTypes) as $Filename) {

// Read file creation time
$FileCreationTime = filectime($Filename);

// Calculate file age in seconds
$FileAge = time() - $FileCreationTime;

// Is the file older than the given time span?
if ($FileAge &gt; ($expiretime * 60)){

// Now do something with the olders files...

echo "The file $Filename is older than $expiretime minutes\r\n";

//delete files:
unlink($Filename);
}

}
?&gt;
</code></pre>
