php下载文件简单实例
class Spider { public function downloadImage($url, $path='images/') { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30); $file = curl_exec($ch); curl_close($ch); $this->saveAsImage($url, $file, $path); } private function saveAsImage($url, $file, $path) { $filename = pathinfo($url, PATHINFO_BASENAME); if(!file_exists($path)){ mkdir($path,0777); } $resource = fopen($path . $filename, 'a'); fwrite($resource, $file); fclose($resource); } } $str = file_get_contents("http://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US"); $arr = json_decode($str,true); $img_url = 'http://www.bing.com'.$arr['images'][0]['url']; $img = new Spider(); $img->downloadImage($img_url);