<?php
require 'connection.php';
$catAttributes = "SELECT * FROM categoryhasattributes where category_id = '$categoryid'"; //suppose $categoryid=10
    $queryCatAttributes = mysqli_query($con,$catAttributes);
    $arrayCatAttributes = array();
    $index = 0;
    while($row = mysqli_fetch_assoc($queryCatAttributes)){
        $arrayCatAttributes[$index] = $row;
        $index++;
    }

?>
<div class="form-group row">
                        <label class="col-sm-3 form-control-label">Enabled Attributes</label>
                        <div class="col-sm-9">
                            <?php

                            $getAttributes = "SELECT * FROM categoryattributes";
                            $queryAttributes = mysqli_query($con,$getAttributes);
                            $i = 0;

                                while ($t = mysqli_fetch_array($queryAttributes)) {

                                    ?>

                                    <div style='position: relative; margin: 5px; width: 40%; float: left;'>
                                        <input type="checkbox"
                                            <?php echo $arrayCatAttributes[$i]['attribute_id'] == $t['id'] ? 'checked' : ''; ?>
                                               value="<?php echo $t['id']; ?>"> <?php echo $t['attr_display']; ?>
                                    </div>
                                    <?php

                                $i++;
                            }
                            ?>
                        </div>