temp.html

<form action="upload.php" method="post" enctype="multipart/form-data">
   <label for="imie">Podaj imie</label>
   <input type="text" name="imie" id="imie" minlength="3" maxlength="30" placeholder="Jan" required>
   <br>
   <label for="nazwisko">Podaj nazwisko</label>
   <input type="text" name="nazwisko" id="nazwisko" minlength="2" maxlength="80" placeholder="Kowalski" required>
   <br>
   <label for="email">Podaj email:</label>
   <input type="email" name="email" id="email" placeholder="example@mail.com">
   <br>
   <label for="pesel">Podaj PESEL:</label>
   <input type="text" name="pesel" id="pesel" minlength="11" maxlength="11" required>
   <br>
   <label for="avatar">Wstaw zdjęcie profilowe:</label>
   <input type="file" name="avatar" id="avatar" accept="image/*">
   <br><br>
   <input type="reset" value="Wyczyść" style="margin-right: 10px;">
   <input type="submit" value="Dodaj">
</form>