update.php

<?php 
	
	include 'config.php';

	if (isset($_POST['update']) && $_FILES['logo_name']) {
		
		$menu_id = $mysqli->real_escape_string($_POST['menu_id']);
		$menu_name = $mysqli->real_escape_string($_POST['menu_name']);
		$menu_price = $mysqli->real_escape_string($_POST['menu_price']);
		$menu_description = $mysqli->real_escape_string($_POST['menu_description']);

		$logo_name = $_FILES['logo_name']['name'];
		$tmp_name = $_FILES['logo_name']['tmp_name'];

		$pathAndname = "uploads/img/".$logo_name;

		$move_logo = move_uploaded_file($tmp_name, $pathAndname);

		if ($_FILES['logo_name']['size'] > 0) {
			
			if (!($_FILES['logo_name']['type'] =="image/jpeg" OR $_FILES['logo_name']['type'] =="image/png")) {
                echo '<script>' . 'alert("Only image allowed with format Jpg or Png!");' . '</script>';
                echo '<script>' . 'window.location.href="update.php";' . '</script>';
            }
			else {

	        	$Q = "UPDATE menu SET menu_name = '$menu_name', menu_price = '$menu_price', menu_description = '$menu_description',
        			menu_logo = '$pathAndname' WHERE id ='". $menu_id ."'";
	        	$R = $mysqli->query($Q);

	        	if ($R) {
	        		
	        		echo '<script>' . 'alert("Menu successfully updated");' . '</script>';
	            	echo '<script>' . 'window.location.href="home.php";' . '</script>';
	        	}
	        	else{

	        		echo "Something wrong with query";
	        	}
	        }
		}
		else {

        	$Q = "UPDATE menu SET menu_name = '$menu_name', menu_price = '$menu_price', menu_description = '$menu_description' WHERE id = '" . $menu_id . "'";
        	$R = $mysqli->query($Q);

        	if ($R) {
        		
        		echo '<script>' . 'alert("Menu successfully updated");' . '</script>';
            	echo '<script>' . 'window.location.href="home.php";' . '</script>';
        	}
        	else{

        		echo "Something wrong with query update(No files)";
        	}
		}
	}

?>