มีใครช่วยดูโด็ดนี้ทีคะว่าผิด ตรงไหน

<div class="tab-pane" id="so_module_attribute_option"> <!--Attribute Option -->
                                    <?php foreach($attributes as $attribute_name => $attribute_arr)
                                    {
                                    ?>
                                        <div class="form-group">
                                            <div class="col-sm-3">
                                                <label class="col-sm-12 control-label" for="disp_att_group_id_<?php echo explode("_",$attribute_name)[0];?>">
                                                    <?php echo explode("_",$attribute_name)[1];?>
                                                </label>
                                                <div class="form-group">
                                                    <div class="col-sm-6 col-sm-offset-6">
                                                        <select name="disp_att_group_id_<?php echo explode("_",$attribute_name)[0];?>" class="form-control" id="disp_att_group_id_<?php echo explode("_",$attribute_name)[0];?>">
                                                            <?php
                                                            if ($module['disp_att_group_id_'.explode("_",$attribute_name)[0]]) { ?>
                                                            <option value="1" selected="selected"><?php echo $objlang->get('text_yes'); ?></option>
                                                            <option value="0"><?php echo $objlang->get('text_no'); ?></option>
                                                            <?php } else { ?>
                                                            <option value="1"><?php echo $objlang->get('text_yes'); ?></option>
                                                            <option value="0" selected="selected"><?php echo $objlang->get('text_no'); ?></option>
                                                            <?php } ?>
                                                        </select>
                                                    </div>
                                                </div>
                                            </div>
                                            
                                            <div class="col-sm-9" style="border-left:#ccc 1px solid">
                                                <?php foreach($attribute_arr as $item)
                                                {
                                                ?>
                                                    <div class="form-group">
                                                        <label class="col-sm-2 control-label" for="disp_att_id_<?php echo $item['attribute_id'];?>">
                                                            <?php echo $item['attribute_name'];?>
                                                        </label>
                                                        <div class="col-sm-4">
                                                            <select name="disp_att_id_<?php echo $item['attribute_id'];?>" class="form-control" id="disp_att_id_<?php echo $item['attribute_id'];?>">
                                                                <?php
                                                                if ($module['disp_att_id_'.$item['attribute_id']]) { ?>
                                                                <option value="1" selected="selected"><?php echo $objlang->get('text_yes'); ?></option>
                                                                <option value="0"><?php echo $objlang->get('text_no'); ?></option>
                                                                <?php } else { ?>
                                                                <option value="1"><?php echo $objlang->get('text_yes'); ?></option>
                                                                <option value="0" selected="selected"><?php echo $objlang->get('text_no'); ?></option>
                                                                <?php } ?>
                                                            </select>
                                                        </div>
                                                    </div>
                                                <?php
                                                }
                                                ?>
                                                
                                            </div>
                                        </div>
                                    <?php
                                    }
                                    ?>
                                </div>
บรรทัดที่ขึ้น error
<label class="col-sm-12 control-label" for="disp_att_group_id_<?php echo explode("_",$attribute_name)[0];?>">
ขึน
Parse error: syntax error, unexpected '[', expecting ',' or ';' in....
แต่ พอลบ โค็ด ทั้งหมดนี้ออก ก็ใช้งานได้ แต่ จะ ไม่มี ฟังชั่น <!--Attribute Option -->