PHP - Php Error I Just Can't Figure Out, Deals With Classes

<?php
class Post{
	private $user_obj;
	private $con;

	public function __construct($con, $user){
  	$this->con = $con; 
   	$this->user_obj =  new User($con,$user);
	}
	public function submitPost($body,$user_to){
	$body = strip_tags($body);////Removing HTML TAGS
	$body = mysqli_real_escape_string($this->con,$body);
	$check_empty = preg_replace('/\s+/', '', $body);//delte all spaces

	if($check_empty != ""){


	//Current Date and time
	$date_added = date("Y-m-d H:i:s");

	//get username
	$added_by = $this->user_obj->getUsername();

	//if user have not a profile send to the none
	if($user_to == $added_by){
	$user_to = "none";
	}
	////insert query
	$query = mysqli_query($this->con,"INSERT INTO posts VALUES('','$body','$added_by','$user_to','$date_added','no','no','0')");
	$retured_id = mysqli_insert_id($this->con);

	//insert notification

	//Update post count for user
	$num_post = $this->user_obj->getNumPosts();
	$num_post++;
	$update_query = mysqli_query($this->con,"UPDATE users SET num_post = '$num_post' WHERE username = '$added_by'" );
}
	public function loadPostsFriends(){
	$str = ""; //string to return
	$data = mysqli_query($this->con,"SELECT * FROM posts where deleted = 'no' ORDER by id DESC");
	while($row = mysqli_fetch_array($data))
	{
		$id = $row['id'];
		$body = $row['body'];
		$added_by = $row['added_by'];
		$date_time = $row['date_added'];

		/// Creating user post on other user profile
		if($row['user_to'] == "none"){
			user_to = "";
			else {
             $user_to_obj = new User($con,$row['user_to']);
             $user_to_name = $user_to_obj->getFirstandLastname();
             $user_to = "to <a href='" . $row['user_to'] . "'>" .$user_to_name . "</a>";
			}
			// check if user account was closed 
			$added_by_obj = new User($this->con,$added_by);
			if($added_by_obj ->isClosed()){
				continue;
			}
			$user_details_query = mysqli_query($this->con,"SELECT first_name,last_name,profile_pic FROM users where username = '$added_by'");
			$user_row = mysqli_fetch_array($user_details_query);
			$first_name = $user_row['first_name'];
			$last_name = $user_row['last_name'];
			$profile_pic= $user_row['profile_pic'];

			///time stamp
			$date_time_now = date("Y-m-d H:i:s");
			$start_date = new Date_Time($date_time);////Time_of_post
			$end_date = new Date_Time($date_time_now);///Current_time
			$intervel = $start_date->diff($end_date);
			if($intervel->y >< 1 ){
            if($intervel ==1 )
            	$time_message = $intervel->y . " year ago";/// 1 Year Ago
            else
            	$time_message = $intervel->y . " years ago"; //1+ year ago
			}
			else if($intervel-> m >= 1 ){
				if($intervel->d == 0){
					$days = " ago";
				}
				else if($intervel->d == 1){
					$days = $intervel->d."day ago";
				}
				else
				{
					$days = $intervel->d."day ago";
				}
				if($intervel->m == 1){
					$time_message = $intervel->m." month".$days;
				}
				else 
					$time_message = $intervel->m." months".$days;
			}
		}
		else if($intervel->d >= 1){
				if($intervel->d == 1){
					$days = "Yesterday";
				}
				else
				{
					$days = $intervel->d."days ago";

				}
		
			}
			else if($intervel->h >= 1){
				if($intervel->h == 1){
					$time_message = $intervel->h." hour ago";
				}
				else
				{
					$time_message = $intervel->h." hours ago";

				}

		}
		else if($intervel->i >= 1){
				if($intervel->i == 1){
					$time_message = $intervel->i." minute ago";
				}
				else
				{
					$time_message = $intervel->i." minutes ago";

				}
	}
			else{
				if($intervel->s < 30){
					$time_message = "Just Now";
				}
				else
				{
					$time_message = $intervel->s." seconds ago";

				}
				
			}
			$str .= "<div class='status_post'>
				         <div calss='post_profile_pic'>
				         <img src='$profile_pic' width='50'> 	
				        </div>
				        <div calss='posted_by' style='color#ACACAC;'>
				        <a href = '$added_by'> $first_name $last_name </a> $user_to &nbsp;&nbsp;;&nbsp;;&nbsp;$time_message
				        </div>
				        <div id = 'post_body'$body<br></div>
				         </div>
				"
			
		}
		echo $str;
	}
}
?>

When i run this code this show me the error Parse error: syntax error, unexpected 'public' (T_PUBLIC) in C:\xampp\htdocs\social\Classes\Post.php on line 39

the line 39 is public function loadPostsFriends()

I check the code again and again but i cant find the error please help in this error

Can someone please give me some guidance on how to deal with the following warning

Warning: move_uploaded_file(../usernet/img/60ff59c9f0a830.45733158.jpg): Failed to open stream: Permission denied in /opt/lampp/htdocs/site/admin/add_post.php on line 23

Warning: move_uploaded_file(): Unable to move "/tmp/phpXNeGsj" to "../usernet/img/60ff59c9f0a830.45733158.jpg" in /opt/lampp/htdocs/site/admin/add_post.php on line 23

All directories and files in the path have full owner permissions and I've made myself the owner of them all (I'm on a linux system). I've also done the same with the /tmp folder. I can't even think of anything else to change and haven't found anything online that solves the issue.

in case it's needed, the php is as follows:

<?php
require("assets/initializations.php");

if(isset($_POST['add_post']) && !empty($_FILES['post_image'])) {
    $filename = $_FILES['post_image']['name'];
    $file_tmp_name = $_FILES['post_image']['tmp_name'];
    $filesize = $_FILES['post_image']['size'];

    $file_ext = explode('.', $filename);
    $file_act_ext = strtolower(end($file_ext));
    $allowed = array('jpeg', 'jpg', 'png', 'gif');

    if(!in_array($file_act_ext, $allowed)) {
        header("Location: add_post.php?message=file_type_not_allowed");
    } else {
        if($filesize > 10000000) {
            header("Location: add_post.php?message=file_too_large");

        } else {
            $file_new_name = uniqid('', true) . "." . $file_act_ext;
            $dir = "../usernet/img/";
            $target_file = $dir . basename($file_new_name);
            move_uploaded_file($file_tmp_name, $target_file);
            echo "<script>alert('Image uploaded successfully');</script>";
        }
    }
}

I do get the javascript alert that's it's been successfully uploaded, but the image doesn't make it into the specified directory and I get the warnings at the top. I'm also, probably obviously from the path, using XAMPP server for development. TIA

I am getting Fatal error: Uncaught Error: Call to a member function real_query() on null  with this code:

public final function Retrieve($TABLE, $CRIT){
  $_query = "SELECT * FROM `{$TABLE}` WHERE ";
  foreach($CRIT as $_field => $info){
    $_query .= " `{$_field}` = `{$info}` &&";
  }
  if($this->LINK->real_query(rtrim($_query, ' &'))){
    return $this->LINK->store_result();
  } else{
    return json_encode(array("Error"=>$this->LINK->errno(), "Description"=>$this->LINK->error()));
  }
}

(LINK is my mysql_connect() result.) I have tried everything i can think of, ->query, going to mysqli_query, breaking it sown and using a $result variable, but nothing seems to work...