createCategory.php

<?php 
    include 'main.php';
    $uploadOk = 1;
    $allowed = array('jpg', 'jpeg', 'gif', 'png', strtolower(end(explode('.', $profile_pic))));
		$file_name = $_FILES['post_img']['name'];
		$file_extn = strtolower(end(explode('.', $file_name)));
        $file_temp = $_FILES['post_img']['tmp_name'];
        $check = getimagesize($_FILES["post_img"]["tmp_name"]);       
        if($check !== false) {
          //echo "File is an image - " . $check["mime"] . ".";
          $uploadOk = 1;
        } else {
         // echo "File is not an image.";
          $uploadOk = 0;
        }
        if ($_FILES["fileToUpload"]["size"] > 500000) {
            echo "Sorry, your file is too large.";
            $uploadOk = 0;
          }      
		if (in_array($file_extn, $allowed) === true && $uploadOk == 1) {
			uploadCategory($_POST['post_name'], $file_temp, $file_extn, $con);
		} elseif (in_array($file_extn, $allowed) === false) {
			echo 'Incorrect file type ';
			echo implode(',', $allowed);
		} else {
		echo 'fejl';
    }

    function uploadCategory($name, $file_temp, $file_extn, $con)
    {
        $file_path = 'uploads/' . substr(md5(time()), 0, 10) . '.' . $file_extn;
        move_uploaded_file($file_temp, $file_path);
        $stmt = $con->prepare('INSERT INTO categories (name, icon) VALUES (?, ?)');
        $stmt->bind_param('ss', $name, $file_path);
        $stmt->execute();
        $stmt->close();
        header('Location: adminPanel.php');
    }