อัพโหลดไฟล์รูปใน localhost ไม่ได้ครับทำไงดี รบกวนด้วยครับ

upload.php

echo $_POST

<?=PATH_URL?>

<?=PATH_URL?>/module/upload.php

$('#file').uploadify({
		'buttonText'	: 'BROWSE...',
		'uploader'  	: '<?=PATH_URL?>/module/jquery/jquery.uploadify/uploadify.swf',
		'script'    	: '<?=PATH_URL?>/module/upload.php',
		'cancelImg' 	: '<?=PATH_URL?>/module/jquery/jquery.uploadify/cancel.png',
		'folder'    	: '<?=PATH_URL?>/content/upload/product',
		'auto'      	: true,
		'multi'			: true,
		'fileDataName'  : 'file',
		'onComplete'    : function(event,ID,fileObj,response,data) { 
					var obj = '<br /><img src="<?=PATH_URL?>/content/upload/product/'+response+'" style="width:200px;height:auto;" /><br />';
					$("#view").append(obj);
					var val = $("#file_upload").val();
					val = (val=="") ? response : val+','+response ;
					$("#file_upload").val(val);
		}
							
	});	

<form role="form" id="frm2" name="frm2" onsubmit="return false;">
			<div class="form-group">
                <label>รูป (700px × 700px)</label><br />
                <input type="file" id="file" name="file" class="form-control"/>
                <br />
                <div id="view">
                <?php
                $sql = "SELECT * FROM ".TBL_PRODUCT_IMG." WHERE `product_id`='".$id."' ORDER BY `id` ASC;";
                $query = mysqli_query($oconn,$sql);
				$file="";
				while($row=mysqli_fetch_assoc($query)){
					$file .= $row['file'].",";
                ?>
                <div id="<?=$row['id']?>" style="width:200px;">
                <img src="<?=PATH_URL?>/content/upload/product/<?=$row['file']?>" style="width:200px;height:auto;"  />
                <div style="color:red; text-align:center;cursor:pointer;" onclick="del_img('<?=$id?>','<?=$row['id']?>','<?=$row['file']?>');">ลบรูป</div>
                </div>
                <?php
				}mysqli_free_result($query);
                ?>
                
                </div>
                <input type="hidden" id="file_upload" name="file_upload" value="<?=substr($file,0,-1)?>"/>
            </div>
            
			<input type="hidden" id="product_id" name="product_id" value="<?=$id?>" />
			<div class="box-footer">
				<button type="submit" class="btn btn-primary" id="btn-submit">Submit</button>
			</div>
		</form>

if($type=="product_img"){
	
	$product_id = trim($_POST['product_id']);
	
	$by = $_SESSION['ss_admin'];
	$ip = getIp();
	
	$arr = explode(",",trim($_POST['file_upload']));
	
	$sql=array();
	$sql[] = "DELETE FROM ".TBL_PRODUCT_IMG." WHERE `product_id`='".$product_id."';";
	foreach($arr as $key){
		if($key!=""){
			$sql[] = "INSERT INTO ".TBL_PRODUCT_IMG." (`product_id`,`file`,`create_date`,`create_by`,`create_ip`) VALUES ('".$product_id."','".$key."',NOW(),'".$by."','".$ip."');";
		}
	}
	
	
	foreach($sql as $key){
		mysqli_query($oconn,$key);
	}
	
	$data=1;
	
	
}

'script'        : '<?=PATH_URL?>/module/upload.php',

<?php
error_reporting(0);
if(!empty($_FILES)) {

	$new_name = time();
	$filename = $_FILES['file']['name'];
	$name_arr = split ("\.", basename($filename));
	list($file_extension,$upload_filename) = array_reverse($name_arr);
	$file_extension = strtolower($file_extension);
	$new_name =	$new_name.".".$file_extension;
	$upload_file_arr['name'] = $new_name;

	$targetPath = $_SERVER['DOCUMENT_ROOT'] . $_REQUEST['folder'] . '/';
	$targetFile =  str_replace('//','/',$targetPath) . $upload_file_arr['name'];
	
	if(move_uploaded_file($_FILES['file']['tmp_name'],$targetFile)){
		$file = $upload_file_arr['name'];
	}

	echo $file;
	exit;


}


?>

$_FILES['file']['tmp_name']

// คิดว่าต้องการแยกระหว่าง ชื่อไฟล์ กับ นามสกุลไฟล์
// ตรงนี้ทำให้ error
$name_arr = split ("\.", basename($filename));

// เปลี่ยนมาลองใช้แบบนี้
$name_arr = explode (".", basename($filename));

http://php.net/manual/en/function.split.php