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opendir() issue

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i want to load my files from a directory into an array. my code thus far is
#set up the array

$dir = "/images/hand/";

$files = array();
$directory = opendir($dir);
while($filename = readdir($directory)){
if(strlen($filename) > 2){
array_push($files, $filename);

foreach($files as $name)
echo "<img src='$name.jpg'> <br>";

i get the error:
Warning: opendir(www.sbwelding.com//images/hand/) [function.opendir]: failed to open dir: Invalid argument in C:\serve\www\hand.php on line 12

Warning: readdir(): supplied argument is not a valid Directory resource in C:\serve\www\hand.php on line 13
i have php 5 and have tried using the whole url and it doesnt work. if u have heard of this problem before i would appreciate the help. i am trying to make the script automatically load every pic in my folder.

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You probably need to remove the first slash and make it "images/hand" instead. Also, you may look into using the full path, NOT the "url". Also, I suggest this function [a href=\"http://www.php.net/glob\" target=\"_blank\"]http://www.php.net/glob[/a]

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