Untitled

<?php
session_start();
$errors = array();
if (count($errors) > 0) : ?>
    <div class="error">
        <?php foreach ($errors as $error) : ?>
            <p><?php echo $error ?></p>
        <?php endforeach ?>
    </div>
<?php  endif;
if(isset($_POST['reg'])) {
    $username = $_POST['username'];
    $email = $_POST['mail'];
    $password = $_POST['password'];
    $password2 = $_POST['password2'];
    if ($password != $password2) {
        echo "Passwords do not match";
    }

    if (count($errors) == 0) {
        $map = "uploads/";
        $image = $map . basename($_FILES["pic"]["name"]);
        $continue = 1;
        $imageFileType = strtolower(pathinfo($image, PATHINFO_EXTENSION));
        // Check if image file is a actual image or fake image
        if (isset($_POST["pic"])) {
            $check = getimagesize($_FILES["pic"]["tmp_name"]);
            if ($check !== false) {
                echo "File is an image - " . $check["mime"] . ".";
                $continue = 1;
            } else {
                echo "File is not an image.";
                $continue = 0;
            }
        }
        if ($_FILES["pic"]["size"] > 500000) {
            echo "Sorry, your file is too large.";
            $continue = 0;
        } else {
            $file = fopen("users.txt", "a");
        }
        if ($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
            && $imageFileType != "gif") {
            echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
            $continue = 0;
        } else {
            $file = fopen("users.txt", "a");
        }
        if ($continue == 0) {
            echo "Sorry, your file was not uploaded.";
        } else {
            if (move_uploaded_file($_FILES["pic"]["tmp_name"], $image)) {
                echo "<p class='filesaved'>The file " . basename($_FILES["pic"]["name"]) . " has been uploaded.<br></p>";
                $file = fopen("users.txt", "a");
            } else {
                echo "Sorry, there was an error uploading your file.";
            }
        }

        if (!$file) {
            echo "Cant find the file";
        }
        $user = htmlspecialchars($_POST['username']);
        $mail = htmlspecialchars($_POST['mail']);
        $password = htmlspecialchars($_POST['password']);
        $avatar = $image;
        $_SESSION["username"] = $user;
        $_SESSION["avatar"] = $avatar;
        $username = $_SESSION["username"];
        $data = $user . PHP_EOL . $mail . PHP_EOL . $password . PHP_EOL . $avatar . PHP_EOL . PHP_EOL;

        $myObj->username = $user;
        $myObj->mail = $mail;
        $myObj->password = $password;
        $myObj->avatar = $avatar;

        $myJSON = json_encode($myObj);
        fwrite($file, $myJSON);
        fclose($file);
        echo "<!DOCTYPE html>
                <html lang=\"en\">
                <head>
                    <meta charset=\"UTF-8\">
                    <title>Succes</title>
                    <link rel=\"stylesheet\" href=\"styles.css\">
                </head>
                <body>
                    <p class=\"succestext\">Succes</p>
                    <script>
                    window.setTimeout(
                        function(){
                            window.location.href = \"home.html\";
                            }, 10000);
                    </script>
                </body>
                </html>";
    }
}