Detailed explanation of sample code for php to download files to local area

黄舟
Release: 2023-03-06 15:56:01
Original
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Note: This demo is suitable for the yiiframework. If you are not using the yii framework, this method is also applicable to you. Just understand the idea briefly

/** * 保存文件到本地 * @param 文件路径 $url * @param 保存本地路径 $savePath * @return string */ public static function downloadFile($url) { $www_root = Yii::getPathOfAlias('webroot'); $root_dir = 'uploads/audio'; $build_dir = date('Y') . '/' . date('m'); $origin_dir = $root_dir . '/' . $build_dir; $savePath = $www_root . DIRECTORY_SEPARATOR . $origin_dir . DIRECTORY_SEPARATOR;// 本地存放的路径(我是按照年月日来划分) $fileName = Common::getUrlFileExt($url); // 获取文件扩展名 if (!file_exists($savePath)) { Common::mkdirs($savePath); //目录不存在创建目录 } $fileName = time() . '.' . $fileName; //$file = file_get_contents($url); $ch = curl_init(); $timeout = 60; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); //使用curl $ch 为返回的文件流 if (!empty($file_contents)) { file_put_contents($savePath . '/' . $fileName, $file_contents); //保存到本地的地址 return '/' . $origin_dir . '/' . $fileName; //返回本地地址 } } /** * 获取文件扩展名 * @param 网页URL $url * @return string */ public static function getUrlFileExt($url) { $ary = parse_url($url); $file = basename($ary['path']); $ext = explode('.', $file); return $ext[1]; }
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/** * 创建多级目录 */ public static function mkdirs($dir) { if (!is_dir($dir)) { if (!Common::mkdirs(dirname($dir))) { return false; } if (!mkdir($dir, 0777)) { return false; } } return true; }
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downloadFile(//m.sbmmt.com/); // 调用
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