imploding checkbox datas into a single field in database
<input type="checkbox" value="PDC" name="course[]" checked id="alm_true">PDC</label>
<input type="checkbox" value="B.COM" name="course[]" >B.COM</label>
<input type="checkbox" value="M.COM" name="course[]" >M.COM</label>
<?php
$role = implode(",", $_POST['course']);
// save $role in db
// eg of o/p:- PDC,BCOM,MCOM
// 3 datas will enter in the same field seperated by commas
?>