PHP Traversal Directory

<?php PHP Traversal directory

function Checkphpexe ($filename) {
$img _exts = array ("JPG");
foreach ($img _exts as $this _ext) {
if (Preg_match ("/\. $this _ext$/", $filename)) {
return true;
}
}
return false;
}

function Listdir ($dir) {
if (Is_dir ($dir)) {
if ($dh = Opendir ($dir)) {
while (($file = Readdir ($DH))!== false) {
if (Is_dir ($dir.) /". $file)) && $file!=". && $file!= "...") {
Listdir ($dir. " /". $file." /");
}else{
if ($file!= "." && $file!= "...") {
if (Checkphpexe ($file)) {$file = Eregi_replace (". jpg", "", $file);}
$conn =mysql_connect ("localhost", "root");
$sql =mysql_select_db ("cart", $conn);
$result =mysql_query ("select * from cart where product_images= ' $file '", $conn);
$numrows =mysql_fetch_assoc ($result);
$name = $numrows [' product_images '];
if ($name = = "") {
$db = mysql_connect ("localhost", "root");
mysql_select_db ("cart", $db);
$sqlup = "INSERT INTO cart (product_images) VALUES (' $file ')";
$result = mysql_query ($sqlup);
Mysql_close ($DB);
}
}
}
}
Closedir ($DH);
}
}
Listdir ("c:\\inetpub\\wwwroot\\upload\\");