php 批量下載圖片的一個小程式____小程式

<?php$url = "http://photo.hupu.com/nba";$content=file_get_contents($url);$reg="/<img.*?src=\"(.*?)\".*?>/";preg_match_all($reg,$content,$matches);$path = './imgDownload';if(!file_exists($path)){mkdir($path, 0777);}for($i = 0;$i < count($matches[1]);$i ++){/*explode$url_arr[$i] = explode('/', $matches[1][$i]);$last = count($url_arr[$i])-1;*///strrchr$filename = strrchr($matches[1][$i], '/');downImage($matches[1][$i],$path.$filename);//downImage($matches[1][$i],$path.'/'.$url_arr[$i][$last]);}function downImage($url,$filename="") {if($url=="") return false;if($filename=="") {$ext=strrchr($url,".");if($ext!=".gif" && $ext!=".jpg" && $ext!=".png" && $ext!="jpeg") return false;$filename=date("YmdHis").$ext;}ob_start();//make file that output from url goes to bufferreadfile($url);//file_get_contents($url);  這個方法不行的。。。只能用readfile$img = ob_get_contents();ob_end_clean();$fp=@fopen($filename, "a");//appendfwrite($fp,$img);fclose($fp);return $filename;}