删除图片代码-PHP源码

if(isset($_SERVER[&＃39;HTTP_X_REQUESTED_WITH&＃39;]) && strtolower($_SERVER[&＃39;HTTP_X_REQUESTED_WITH&＃39;]) == &＃39;xmlhttprequest&＃39;){
			$url = $_GET[&＃39;json&＃39;];
			$url = $_SERVER[&＃39;DOCUMENT_ROOT&＃39;].urldecode($url[&＃39;picurl&＃39;]);
			$pictype = array("gif","jpg","jpeg","png","bmp");
			if(file_exists($url)){
				$infos = pathinfo($url);
				if(in_array($infos[&＃39;extension&＃39;],$pictype) && strpos($url,"uploadfile")){
					if(unlink($url)){
						echo json_encode(array("status"=>"1","info"=>L(&＃39;删除成功!&＃39;)));
					}else{
						echo json_encode(array("status"=>"2","info"=>L("删除失败，请检查权限!")));
					}
				}else{
					echo json_encode(array("status"=>"2","info"=>L("删除失败，请检查权限!")));
				}
				
			}else{
				echo json_encode(array("status"=>"0","info"=>L("文件不存在或已删除")));
			}
		}