unable to get checkbox values

I have the following code. I want to get only selected checkbox values but I get only last checkbox value. see what's wrong in my code.

<div class="box-body table-responsive no-padding">
                            <h4>Select Jobwork</h4>

                               <table id="data-table" class="table table-hover jobworks-table table-responsive">
                                    <thead>
                                        <tr style="background-color: #DDDD; color:firebrick;">
                                            <th><input type='checkbox' value="1" name="select_all" /></th>
                                            <th>JobWork Name</th>
                                            <th>Description</th>
                                            <th>Price</th>
                                        </tr>
                                    </thead>
                                   <tbody>
                                <?php foreach ($item as $key=>$value){
                                $decoded = json_decode($value['jobWorkJsonString']); ?>
                                       <?php foreach($decoded as $row){ ?>
                                            <tr class="odd gradeX">
                                                <td><input type='checkbox' name="<?php echo $row->jobwork; ?>" /></td>
                                                <td style="padding-left:0px;"><?php echo $row->jobwork; ?><input type="hidden" name="jobwork_name" value="<?php echo $row->jobwork; ?>"></td>
                                                <td style="padding-left:0px;"><?php echo $row->description; ?><input type="hidden" name="jobwork_description" value="<?php echo $row->description; ?>"></td>
                                                <td style="padding-left:0px;"><?php echo $row->jobPrice; ?><input type="hidden" name="price" value="<?php echo $row->jobPrice; ?>"></td>        
                                                <?php } ?>
                                            </tr>
                                    <?php } ?>
                                    </tbody>
                                </table>
                            <br>
                        </div>