如何在单个变量中追加不同的Array值

Question

<tr>
    <td><p style="color:#999; font-size:14px; text-align:right;">Please select your Board :</p></td>
    <td>
    <input type="checkbox" name="board[]" id="all" value="cbse">CBSE
    <input type="checkbox" name="board[]" id="sci" value="cse/Ise">ICSE/ISE
    <input type="checkbox" name="board[]" id="mat" value="State">State
    <input type="checkbox" name="board[]" id="mat" value="International">International
    </td>
    </tr>

    <tr>
    <td><p style="color:#999; font-size:14px; text-align:right;">Please select Subject :</p></td>       
    <td>      
    <input type="checkbox" name="classfivesubject[]" id="all" value="allsubject">All Subject
    <input type="checkbox" name="classfivesubject[]" id="sci" value="science">Science
    <input type="checkbox" name="classfivesubject[]" id="mat" value="maths">Maths
    </td>
    </tr><!--end of select subject row-->

Here are my PHP values:

$segment=$_SESSION["segment"];
$board=$_POST['board'];
$subject5=$_POST['classfivesubject'];
$segment=implode(",",$segment);
$board=implode(",",$board);
$class5data=implode(",",$subject5);

Again for class8:

$eightboard=$_POST['eightboard'];
$subject8=$_POST['classeightsubject'];
$board=implode(",",$eightboard);
$class8data=implode(",",$subject8);

I want store the values like this in my database in a column: classconducted.

segment:class I_V
Board:CBSE,STATE
Subject:AllSubject,Maths,Science

segment:class V-VIII
Board:CBSE, STATE
SUbject:AllSubject,Maths,Science

My question is how to append all the values in single variable. Assume variable name is classconducted. So that based on the tutor selection class conducted I bring all the data into a single variable and put it into a single column. I hope you understand my question because each tutor is conducting different standard and different subject and different medium. How do I bring all the values in single variable?

I want output like this: classconducted.

    segment:class I_V
    Board:CBSE,STATE
    Subject:AllSubject,Maths,Science

    segment:class V-VIII
    Board:CBSE, STATE
    SUbject:AllSubject,Maths,Science

Answer 1

You can store json encoded data into a single column like

$classconducted = json_encode(array('segment'=>'your segment value','Board'=>'board value','Subject'=>'subject value'));