mysql - how to store checkbox item in a database through php -


i coading huge html form store data in database through php checkbox code not working

////check box code////

<li>mother </li><table><tr><td><input type="checkbox" name="mdeceased"               value="deceased">deceased</td> <td><input type="checkbox" name="malive" value="alive">alive</td></tr> <tr><td><input type="checkbox" name="mretired" value="retired">retired</td> <td><input type="checkbox" name="minservice" value="inservice">in service</td> <td><input type="checkbox" name="mbusiness" value="business">business</td></tr>

///php code checkbox making variable , using in query ///

$mysql = new mysqli('localhost','root','ramsha','scholarships_system') or die ('you\'re     dead'); if(!empty($_post['submit'])) { $mdeceased =$_post['mdeceased']; $malive = $_post['malive']; $mretired = $_post['mretired']; $minservice = $_post['minservice']; $mbusiness = $_post['mbusiness'];   $query = "insert student _details      values('$mdeceased','$malive','$mretired','$minservice','$mbusiness')";  if($updatedb = $mysql->query($query) or die($mysql->error)) {         echo "congrats!";     }

///error coming /// notice: undefined index: mdeceased in c:\wamp\www\student form filling\htmlform.php on line 91

only $alive accepting do

i ended open <input> tags , did null check. started working.

problem trying save variable never set/initialized.

<?php $mysql = new mysqli('localhost','root','subha#143','test') or die ('you\'re     dead'); if(isset($_post['submit'])) { $mdeceased =isset($_post['mdeceased'])?$_post['mdeceased']:null; $malive = isset($_post['malive'])?$_post['malive']:null; $mretired = isset($_post['mretired'])?$_post['mretired']:null; $minservice = isset($_post['minservice'])?$_post['minservice']:null; $mbusiness = isset($_post['mbusiness'])?$_post['mbusiness']:null;  $query = "insert student_details values('$mdeceased','$malive','$mretired','$minservice','$mbusiness')";  if($updatedb = $mysql->query($query) or die($mysql->error)) {         echo "congrats!";     } }else{echo("post not set");} ?>

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