이미지 없을 때 대신 다른 이미지 뜨게 하려면 어떻게 하나요 채택완료

</p><p><?php for ($i=0; $i<2; $i++) {  ?></p><p><span class="Apple-tab-span" style="white-space:pre">		</span><?php</p><p><span class="Apple-tab-span" style="white-space:pre">		</span></p><p><span class="Apple-tab-span" style="white-space:pre">		</span></p><p><span class="Apple-tab-span" style="white-space:pre">		</span>$sql_file="SELECT * FROM g5_board_file where bo_table='{$bo_table}' and wr_id={$list[$i]['wr_id']}";<span class="Apple-tab-span" style="white-space:pre">				</span></p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "<li style ='display:table-cell;width:145px;padding:0 24px;'>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>$result_file = sql_query($sql_file);</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>$row_file=sql_fetch_array($result_file);</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>//echo "<ul class='roll_img'>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "<a href=\"".$list[$i]['href']."\" style='display:inline-block;overflow:hidden;'>"; </p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "<img onerror='this.src='noimg.gif';' src='{$g5['path']}/data/file/{$bo_table}/$row_file[bf_file]' style='width:100%;' />";   // 이미지 출력</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "</a>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "<a style='margin-top:5px;display:block' href=\"".$list[$i]['href']."\">";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo $list[$i]['subject'];</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "</a>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>echo "</li>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span>//echo "</ul>";</p><p><span class="Apple-tab-span" style="white-space:pre">		</span></p><p><span class="Apple-tab-span" style="white-space:pre">		</span> ?><span class="Apple-tab-span" style="white-space:pre">	</span></p><p><?php }  ?></p><p><?php if (count($list) == 0) { //게시물이 없을 때  ?></p><p><span style="text-align:center;display:block;width:90%;margin:0 auto;">게시물이 없습니다.</span></p><p><style type="text/css"></p><p><span class="Apple-tab-span" style="white-space:pre">	</span>.latest_board img {display:none;}</p><p></style></p><p><?php }  ?></p><p>