รบกวนดู scrip php upload & crop รูปภาพให้หน่อยครับ

<?php
	error_reporting (E_ALL ^ E_NOTICE);
	session_start(); //Do not remove this
	require_once('config/config.ini.php');
	require_once('config/function.php');
	
	
	if(isset($_GET['seccode1']) && isset($_GET['seccode2'])){
		$seccode1 = $_GET['seccode1'];
		$seccode2 = $_GET['seccode2'];
		
		$con = db_connect();
		
		$sql = "SELECT id,pic FROM friend_list WHERE MD5(lineid)='".$seccode1."' AND MD5(dateadd)='".$seccode2."'";
		
		$query = mysql_query($sql);
		
		if(mysql_num_rows($query)){
			$data = mysql_fetch_array($query);
			$_SESSION['usrid'] = $data['id'];
			$_SESSION['usrpic'] = $data['pic'];
		}else{
			$_SESSION['usrid'] = 0;
		}
		mysql_close($con);
	}else{
		if(!isset($_SESSION['usrid'])){
			$_SESSION['usrid'] = 0;
		}
	}
	
	
	if($_SESSION['usrid']){
		$con = db_connect();

//only assign a new timestamp if the session variable is empty
if (!isset($_SESSION['random_key']) || strlen($_SESSION['random_key'])==0){
    $_SESSION['random_key'] = strtotime(date('Y-m-d H:i:s'));

$upload_dir = "../upload_pic"; 				// The directory for the images to be saved in
$upload_path = $upload_dir."/";				// The path to where the image will be saved
$large_image_prefix = $_SESSION['usrid']."_resize"."_"; 			// The prefix name to large image
$thumb_image_prefix = $_SESSION['usrid']."_thumbnail"."_";			// The prefix name to the thumb image
$large_image_name = $large_image_prefix.$_SESSION['random_key'];     // New name of the large image (append the timestamp to the filename)
$thumb_image_name = $thumb_image_prefix.$_SESSION['random_key'];     // New name of the thumbnail image (append the timestamp to the filename)
$max_file = "3"; 							// Maximum file size in MB
$max_width = "500";							// Max width allowed for the large image
$thumb_width = "100";						// Width of thumbnail image
$thumb_height = "100";						// Height of thumbnail image
// Only one of these image types should be allowed for upload
$allowed_image_types = array('image/pjpeg'=>"jpg",'image/jpeg'=>"jpg",'image/jpg'=>"jpg",'image/png'=>"png",'image/x-png'=>"png",'image/gif'=>"gif");
$allowed_image_ext = array_unique($allowed_image_types); // do not change this
$image_ext = "";	// initialise variable, do not change this.
foreach ($allowed_image_ext as $mime_type => $ext) 

function resizeImage($image,$width,$height,$scale) {
	list($imagewidth, $imageheight, $imageType) = getimagesize($image);
	$imageType = image_type_to_mime_type($imageType);
	$newImageWidth = ceil($width * $scale);
	$newImageHeight = ceil($height * $scale);
	$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
	switch($imageType) {
		case "image/gif":
			$source=imagecreatefromgif($image); 
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
			$source=imagecreatefromjpeg($image); 
			break;
	    case "image/png":
		case "image/x-png":
			$source=imagecreatefrompng($image); 
			break;
  	}
	imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height);
	
	switch($imageType) {
		case "image/gif":
	  		imagegif($newImage,$image); 
			break;
      	case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
	  		imagejpeg($newImage,$image,90); 
			break;
		case "image/png":
		case "image/x-png":
			imagepng($newImage,$image);  
			break;
    }
	
	chmod($image, 0777);
	return $image;
}
//You do not need to alter these functions
function resizeThumbnailImage($thumb_image_name, $image, $width, $height, $start_width, $start_height, $scale){
	list($imagewidth, $imageheight, $imageType) = getimagesize($image);
	$imageType = image_type_to_mime_type($imageType);
	
	$newImageWidth = ceil($width * $scale);
	$newImageHeight = ceil($height * $scale);
	$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
	switch($imageType) {
		case "image/gif":
			$source=imagecreatefromgif($image); 
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
			$source=imagecreatefromjpeg($image); 
			break;
	    case "image/png":
		case "image/x-png":
			$source=imagecreatefrompng($image); 
			break;
  	}
	imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
	switch($imageType) {
		case "image/gif":
	  		imagegif($newImage,$thumb_image_name); 
			break;
      	case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
	  		imagejpeg($newImage,$thumb_image_name,90); 
			break;
		case "image/png":
		case "image/x-png":
			imagepng($newImage,$thumb_image_name);  
			break;
    }
	chmod($thumb_image_name, 0777);
	return $thumb_image_name;
}
//You do not need to alter these functions
function getHeight($image) {
	$size = getimagesize($image);
	$height = $size[1];
	return $height;
}
//You do not need to alter these functions
function getWidth($image) {
	$size = getimagesize($image);
	$width = $size[0];
	return $width;
}

//Image Locations
$large_image_location = $upload_path.$large_image_name.$_SESSION['user_file_ext'];
$thumb_image_location = $upload_path.$thumb_image_name.$_SESSION['user_file_ext'];

//Create the upload directory with the right permissions if it doesn't exist
if(!is_dir($upload_dir)){
	mkdir($upload_dir, 0777);
	chmod($upload_dir, 0777);
}

//Check to see if any images with the same name already exist
if(file_exists($large_image_location)){
	if(file_exists($thumb_image_location)){
		$thumb_photo_exists = "<img src=\"".$upload_path.$thumb_image_name.$_SESSION['user_file_ext']."\" alt=\"Thumbnail Image\"/>";
	}else{
		$thumb_photo_exists = "";
	}
   	$large_photo_exists = "<img src=\"".$upload_path.$large_image_name.$_SESSION['user_file_ext']."\" alt=\"Large Image\"/>";
	
}else{
   	$large_photo_exists = "";
	$thumb_photo_exists = "";
}

// echo $large_image_location;
// echo strlen($large_photo_exists);

if (isset($_POST["upload"])) { 
	//Get the file information
	$userfile_name = $_FILES['image']['name'];
	$userfile_tmp = $_FILES['image']['tmp_name'];
	$userfile_size = $_FILES['image']['size'];
	$userfile_type = $_FILES['image']['type'];
	$filename = basename($_FILES['image']['name']);
	$file_ext = strtolower(substr($filename, strrpos($filename, '.') + 1));
	
	//Only process if the file is a JPG, PNG or GIF and below the allowed limit
	if((!empty($_FILES["image"])) && ($_FILES['image']['error'] == 0)) {
		
		foreach ($allowed_image_types as $mime_type => $ext) {
			//loop through the specified image types and if they match the extension then break out
			//everything is ok so go and check file size
			if($file_ext==$ext && $userfile_type==$mime_type){
				$error = "";
				break;
			}else{
				$error = "อนุญาตเฉพาะไฟล์ที่มีนามสกุล <strong>".$image_ext."</strong> เท่านั้น<br />";
			}
		}
		//check if the file size is above the allowed limit
		if ($userfile_size > ($max_file*1048576)) {
			$error.= "Images must be under ".$max_file."MB in size";
		}
		
	}else{
		$error= "กรุณาเลือกรูปภาพที่จะอัพโหลด";
	}
	//Everything is ok, so we can upload the image.
	if (strlen($error)==0){
	
		$oldlage = $upload_path.$_SESSION['usrid']."_resize"."_".$_SESSION['usrpic'];
		$oldthumb = $upload_path.$_SESSION['usrid']."_thumbnail"."_".$_SESSION['usrpic'];
		if(file_exists($oldlage)){
			unlink($oldlage);
			if(file_exists($oldthumb)){
				unlink($oldthumb);
			}
		}
		
		if (isset($_FILES['image']['name'])){
			//this file could now has an unknown file extension (we hope it's one of the ones set above!)
			$large_image_location = $large_image_location.".".$file_ext;
			$thumb_image_location = $thumb_image_location.".".$file_ext;
			
			//put the file ext in the session so we know what file to look for once its uploaded
			$_SESSION['user_file_ext']=".".$file_ext;
			
			move_uploaded_file($userfile_tmp, $large_image_location);
			chmod($large_image_location, 0777);
			
			$width = getWidth($large_image_location);
			$height = getHeight($large_image_location);
			//Scale the image if it is greater than the width set above
			if ($width > $max_width){
				$scale = $max_width/$width;
				$uploaded = resizeImage($large_image_location,$width,$height,$scale);
			}else{
				$scale = 1;
				$uploaded = resizeImage($large_image_location,$width,$height,$scale);
			}
			//Delete the thumbnail file so the user can create a new one
			if (file_exists($thumb_image_location)) {
				unlink($thumb_image_location);
			}
		}
		//Refresh the page to show the new uploaded image
		header("location:".$_SERVER["PHP_SELF"]);
		exit();
	}
}

if (isset($_POST["upload_thumbnail"]) && strlen($large_photo_exists)>0) {
	//Get the new coordinates to crop the image.
	$x1 = $_POST["x1"];
	$y1 = $_POST["y1"];
	$x2 = $_POST["x2"];
	$y2 = $_POST["y2"];
	$w = $_POST["w"];
	$h = $_POST["h"];
	//Scale the image to the thumb_width set above
	$scale = $thumb_width/$w;
	$cropped = resizeThumbnailImage($thumb_image_location, $large_image_location,$w,$h,$x1,$y1,$scale);
	//Reload the page again to view the thumbnail
	header("location:".$_SERVER["PHP_SELF"]);
	exit();
}


if ($_GET['a']=="delete" && strlen($_GET['t'])>0){
//get the file locations 
	$large_image_location = $upload_path.$large_image_prefix.$_GET['t'];
	$thumb_image_location = $upload_path.$thumb_image_prefix.$_GET['t'];
	if (file_exists($large_image_location)) {
		unlink($large_image_location);
	}
	if (file_exists($thumb_image_location)) {
		unlink($thumb_image_location);
	}
	
	$sql = "UPDATE friend_list SET pic='0' WHERE pic='".$_SESSION['usrpic']."'";
	mysql_query($sql);
	
	header("location:".$_SERVER["PHP_SELF"]);
	exit(); 
}
?>
<!doctype html>
<html>   
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width">
        <meta name="viewport" content="initial-scale=1.0">
        <link rel="stylesheet" href="style.css" type="text/css">
        <title>อัปโหลดรูป</title>
        <script language="javascript" type="text/javascript" src="css/jquery-1.7.min.js"></script>
    </head>
    <body>
        <div class="main-wrapper">
            <div class="sec-header mobile">
                <div class="menu-icon">เมนูหลัก</div>
                <ul>
                    <li><a href="index.php">หน้าแรก</a></li>
                    <li><a href="addform.php">เพิ่มรายชื่อ</a></li>
                    </ul>
            </div>
            <div class="sec-header desktop">
                <ul>
                    <li><a href="index.php"><img src="images/logo_new.png" title="อัปโหลดรูป" /></a></li>
                    <li><a href="index.php">หน้าแรก</a></li>
                    <li><a href="addform.php">เพิ่มรายชื่อ</a></li>
                </ul>
            </div>
            <div class="sec-content">
                <td class="content">
	
	<?php
//Only display the javacript if an image has been uploaded
if(strlen($large_photo_exists)>0){
	$current_large_image_width = getWidth($large_image_location);
	$current_large_image_height = getHeight($large_image_location);?>
<script type="text/javascript">
function preview(img, selection) { 
	var scaleX = <?php echo $thumb_width;?> / selection.width; 
	var scaleY = <?php echo $thumb_height;?> / selection.height; 
	
	$('#thumbnail + div > img').css({ 
		width: Math.round(scaleX * <?php echo $current_large_image_width;?>) + 'px', 
		height: Math.round(scaleY * <?php echo $current_large_image_height;?>) + 'px',
		marginLeft: '-' + Math.round(scaleX * selection.x1) + 'px', 
		marginTop: '-' + Math.round(scaleY * selection.y1) + 'px' 
	});
	$('#x1').val(selection.x1);
	$('#y1').val(selection.y1);
	$('#x2').val(selection.x2);
	$('#y2').val(selection.y2);
	$('#w').val(selection.width);
	$('#h').val(selection.height);
} 

$(document).ready(function () { 
	$('#save_thumb').click(function() {
		var x1 = $('#x1').val();
		var y1 = $('#y1').val();
		var x2 = $('#x2').val();
		var y2 = $('#y2').val();
		var w = $('#w').val();
		var h = $('#h').val();
		if(x1=="" || y1=="" || x2=="" || y2=="" || w=="" || h==""){
			alert("You must make a selection first");
			return false;
		}else{
			return true;
		}
	});
}); 

$(window).load(function () { 
	$('#thumbnail').imgAreaSelect({ aspectRatio: '1:<?php echo $thumb_height/$thumb_width;?>', onSelectChange: preview }); 
});

</script>
<?php }?>


<div id="divform">
<?php

if(file_exists($upload_path.$_SESSION['usrid']."_resize"."_".$_SESSION['usrpic'])){
	echo "<p id='oldpich1'>ภาพเดิมของคุณ</p>";
	echo  '<p id="oldpic"><img src="'.$upload_path.$_SESSION['usrid']."_thumbnail"."_".$_SESSION['usrpic'].'" /></p>';
	echo "ต้องการลบภาพเดิม <a href=\"".$_SERVER["PHP_SELF"]."?a=delete&t=".$_SESSION['usrpic']."\">คลิก</a><br /><hr />";
}


//Display error message if there are any
if(strlen($error)>0){
	echo "<ul><li><strong>เกิดข้อผิดพลาด!</strong></li><li>".$error."</li></ul>";
}

if(strlen($large_photo_exists)>0 && strlen($thumb_photo_exists)>0){
	$sql = "UPDATE friend_list SET pic='".$_SESSION['random_key'].$_SESSION['user_file_ext']."' WHERE id='".$_SESSION['usrid']."'";
	$query = mysql_query($sql);
	
	echo $large_photo_exists."&nbsp;".$thumb_photo_exists;
	
	// echo "<p><a href=\"".$_SERVER["PHP_SELF"]."?a=delete&t=".$_SESSION['random_key'].$_SESSION['user_file_ext']."\">Delete images</a></p>";
	// echo "<p><a href=\"".$_SERVER["PHP_SELF"]."\">Upload another</a></p>";
	
	//Clear the time stamp session and user file extension
	$_SESSION['random_key']= "";
	$_SESSION['user_file_ext']= "";
	
	$_SESSION['usrid'] = "";
	unset($_SESSION['usrid']);
	
	$_SESSION['usrpic'] = "";
	unset($_SESSION['usrpic']);
	
$js=<<<JS
<script>
	alert('จัดเก็บรูปเรียบร้อยแล้ว');
	location.replace('index.php');
</script>
JS;
	echo $js;
}else{
		if(strlen($large_photo_exists)>0){?>
			<h2>อัปโหลดรูปประจำตัว</h2>
			<p id="thumdesc">คลิ้กเมาท์ซ้ายค้างไว้ที่รูปแล้วลาก</p>
			<div align="center">
				<img src="<?php echo $upload_path.$large_image_name.$_SESSION['user_file_ext'];?>" style="float: left; margin-right: 10px;" id="thumbnail" alt="Create Thumbnail" />
				<div style="border:1px #e5e5e5 solid; float:left; position:relative; overflow:hidden; width:<?php echo $thumb_width;?>px; height:<?php echo $thumb_height;?>px;">
					<img src="<?php echo $upload_path.$large_image_name.$_SESSION['user_file_ext'];?>" style="position: relative;" alt="Thumbnail Preview" />
				</div>
				<br style="clear:both;"/>
				<form name="thumbnail" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
					<input type="hidden" name="x1" value="" id="x1" />
					<input type="hidden" name="y1" value="" id="y1" />
					<input type="hidden" name="x2" value="" id="x2" />
					<input type="hidden" name="y2" value="" id="y2" />
					<input type="hidden" name="w" value="" id="w" />
					<input type="hidden" name="h" value="" id="h" />
					<br />
					<input type="submit" name="upload_thumbnail" value="จัดเก็บภาพย่อ" id="save_thumb" />
				</form>
			</div>
		<hr />
	<?php 	
	
		}

		
	}
	
if(!strlen($large_photo_exists)>0){

	?>
	<h2>Upload Photo</h2>
	<form name="photo" enctype="multipart/form-data" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
	เลือกรูป» <input type="file" name="image" size="30" /> <input type="submit" name="upload" value="Upload" />
	</form>
	<br />
	<!-- <hr />
	<p id="picuploadfooter">ËÒ¡äÁèµéͧ¡ÒÃÍѾâËÅ´ ¡ÃØ³Ò <?php echo "<a href='index.php'>จัดเก็บรูปเรียบร้อยแล้ว</a>"; ?></p> -->
<?php 
		}
?>
	<div id="callback">
		&nbsp;
	</div>
            <div class="sec-footer">
                © copyright 2016 - linefriend.me
        </div>
        <script language="javascript">
        var initHeight,toggle;
        $(function(){
            initHeight=160;
            toggle=false;
 
            $('.sec-header.mobile ul').css({'height':'0px'});
            $('.menu-icon').click(function(e){
                e.preventDefault();
                toggle=!toggle;
                if(toggle){
                    $('.sec-header.mobile ul').animate({ 
                      height: initHeight+'px' 
                     }, 400);
                     $('.menu-icon').html("ปิดเมนู");
                }else{
                    $('.sec-header.mobile ul').animate({ 
                      height: '0px' 
                     }, 400);
                     $('.menu-icon').html("เมนูหลัก");
                }
            });
        });
        </script>
    </body>
</html>
 <?php
		mysql_close($con);
	}else{
		echo "// คุณเข้าใช้ส่วนนี้ไม่ถูกต้อง!!";
	}
?>