Código HTML:
<form name="form1" method="post" action="enviar.php"> <p> <label>Pascal</label> <input type="checkbox" name="checkbox" value="checkbox"> <label>Cobol</label> <input type="checkbox" name="checkbox2" value="checkbox"> <label>C</label> <input type="checkbox" name="checkbox3" value="checkbox"> <label>Visual Basic</label> <input type="checkbox" name="checkbox4" value="checkbox"> <label>Delphi</label> <input type="checkbox" name="checkbox5" value="checkbox"> <label>Java</label> <input type="checkbox" name="checkbox6" value="checkbox"> </form>