Need to change filename on upload

stutco

I have a script that I am customizing. I have it how I want it except that I need it to do:

1) During the upload process it needs to change the filename to picture_01.jpg where the number is decided based on the number of images in the folder.

Ex: i upload a file called 8756hy.jpg I need the program to call the file picture_01.jpg

Please help!

<?php

$site_name = $SERVER['HTTP_HOST'];
$url_dir = "http://".$SERVER['HTTP_HOST'].dirname($SERVER['PHP_SELF']);
$url_this = "http://".$SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];

$upload_dir = "images/";
$upload_url = $url_dir."/images/";
$message ="";

//create upload_files directory if not exist
//If it does not work, create on your own and change permission.
if (!is_dir("images")) {
die ("upload_files directory doesn't exist");
}

if (@$_FILES['userfile']) {
$message = do_upload($upload_dir, $upload_url);
}
else {
$message = "Invalid File Specified.";
}

//print $message;

function do_upload($upload_dir, $upload_url) {

$temp_name = $_FILES['userfile']['tmp_name'];
$file_name = $_FILES['userfile']['name']; 
$file_type = $_FILES['userfile']['type']; 
$file_size = $_FILES['userfile']['size']; 
$result    = $_FILES['userfile']['error'];
$file_url  = $upload_url.$file_name;
$file_path = $upload_dir.$file_name;

$thisfilename = $file_name;
$filesep = split ('[.]', $thisfilename);
$extension = $filesep[1];


//File Name Check
if ( $file_name =="") { 
	$message = "Invalid File Name Specified";
	return $message;
}
//File Size Check
else if ( $file_size > 2000000) {
    $message = "The file size is over 500K.";
    return $message;
}
//File Type Check
else if ( $file_type == "text/plain" ) {
    $message = "Sorry, You cannot upload any script file" ;
    return $message;
}


if ( $extension == "jpg" ) {
$result  =  move_uploaded_file($temp_name, $file_path);
}

if ( $extension == "JPG" ) {
$result  =  move_uploaded_file($temp_name, $file_path);
}

$message = ($result)?"File url <a href=$file_url>$file_url</a>" :
	      "Something is wrong with uploading a file.";

return $message;

}

print("<HTML>");
@$postuser = $POST['postuser'];
@$postpass = $POST['postpass'];
@$postlogout = $_POST['logout'];
print("<FORM ACTION='./admin.php' METHOD='POST'>");
print("<INPUT TYPE='HIDDEN' NAME='postuser' VALUE=$postuser>");
print("<INPUT TYPE='HIDDEN' NAME='postpass' VALUE=$postpass>");
print("<INPUT TYPE='SUBMIT' VALUE='Image Uploaded. Continue.'");
print("</FORM>");

print("<FONT FACE=VERDANA SIZE=1 COLOR=#FFFFFF>");
include("./fileviewer.php");
print("</FONT>");

cezve

<?php
// CONFIG
$serverpath = "./images";           // Path to where images should be uploaded to on the server. INCLUDE TRAILING SLASH.
$urltoimages = "http://img.gr4f.com";     // Web address to where the images are accessible from. INCLUDE TRAILING SLASH.
// CONFIG END

$mode = $_GET['mode'];
if ($mode == "") { $mode = "form"; }

if ($mode == "form") {
	echo "<form enctype='multipart/form-data' method='post' action='?x=upload&mode=upload'>\n";
	echo "<input type='file' name='file'>\n";
	echo "<input type='submit' name='Submit' value='Go'>\n";
}

if ($mode == "upload") {
	$file = $_FILES['file']['name'];
	$allowedfiles[] = "gif";
	$allowedfiles[] = "jpg";
	$allowedfiles[] = "jpeg";
	$allowedfiles[] = "png";
	$allowedfiles[] = "GIF";
	$allowedfiles[] = "JPG";
	$allowedfiles[] = "JPEG";
	$allowedfiles[] = "PNG";    

	$path = "$serverpath/$file";
	foreach($allowedfiles as $allowedfile) {
		if (substr($file, -3) == $allowedfile) {
			//--your part
			$last_id=0;
			@include("last_id.php");
			$next_id=$last_id+1;
			$fplog = fopen("last_id.php", "w");
			fputs($fplog, "<?php \$last_id=$next_id; php?>");
			fclose($fplog);
			$_FILES['file']['name']="picture_".$next_id.substr($file, -4);
			$file=$_FILES['file']['name'];
			$path = "$serverpath/$file";
			move_uploaded_file($_FILES['file']['tmp_name'], "$path");
			// ----------------------
			$done = "yes";
			echo "<p>Your image has been successfully uploaded to our server and can be accessed using the URL provided below.</p>";
			echo "<p><A href='$urltoimages/$file' target='_blank'><strong>$urltoimages/$file</strong></a></p>";
			echo "<p><img src='$urltoimages/$file' border='0'>";  

			$img = "[img]$urltoimages/".$file."[/img]";
			echo "<p><b>BBcode:</b><br> $img </p>";
			break;
		}
	}

    if ($done <> "yes") { print "<p><b>Error:</b> Your image as not been uploaded becuase it is not a recognised image file. Please try again.</p>"; } 
    }
?>

i dont have enough time to work on your code but i changed another code that i already worked on to solve your problem...