268 lines
9.7 KiB
PHP
268 lines
9.7 KiB
PHP
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<?php
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/**
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* lvzheAdmin
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* @author xiekunyu <raingad@foxmail.com>
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* @license http://www.apache.org/licenses/LICENSE-2.0
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*/
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namespace utils;
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//------------------------
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// 文件下载和图片下载
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//-------------------------
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class File
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{
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/**
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* 文件下载
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* @param $file_path
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* @param string $file_name
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* @param string $file_size
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* @param string $ext
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*/
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public static function download($file_path, $file_name = '', $file_size = '', $ext = '')
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{
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if (!$file_name) {
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$file_name = basename($file_path);
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}
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if (!$file_size && in_array(substr($file_path, 0, 1), [".", "/"])) {
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try {
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$file_size = filesize($file_path);
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} catch (\Exception $e) {
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return "文件不存在";
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}
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}
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if (!$ext) {
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$ext = pathinfo($file_path, PATHINFO_EXTENSION);
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}
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if ($ext && !strpos($file_name, ".")) {
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$file_name = $file_name . "." . $ext;
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}
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$content_type = self::getMime($ext);
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header("Cache-Control:");
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header("Cache-Control: public");
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// 处理中文文件名
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$ua = $_SERVER["HTTP_USER_AGENT"];
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$encoded_filename = rawurlencode($file_name);
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// 文件类型
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if (preg_match("/Safari/", $ua)) {
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header('Content-Type: application/octet-stream;charset=utf-8');
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} else {
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header("Content-type: {$content_type}");
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}
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//IE
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if (preg_match("/MSIE/", $ua) || preg_match("/Trident\/7.0/", $ua)) {
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header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
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} else if (preg_match("/Firefox/", $ua)) {
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header('Content-Disposition: attachment; filename*="utf8\'\'' . $file_name . '"');
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} else if (preg_match("/Safari/", $ua)) {
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header('Content-Disposition: attachment; filename*=UTF-8\'\'' . $encoded_filename);
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} else {
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header('Content-Disposition: attachment; filename="' . $file_name . '"');
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}
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// 文件大小
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if ($file_size) {
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header("Accept-Length: " . $file_size);
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header("Content-Length: " . $file_size);
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}
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readfile($file_path);exit();
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}
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/**
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* 功能：php多种方式完美实现下载远程图片保存到本地
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* 参数：文件url,保存文件名称，使用的下载方式
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* 当保存文件名称为空时则使用远程文件原来的名称
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* @param string $url 请求图片的链接
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* @param string $filename 保存的文件名
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* @param int $type 保存图片的类型 0为curl,适用于静态图片,其他为缓冲缓存,适用于动态图片
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* @return string $filename 返回保存的文件名
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*/
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public static function downloadImage($url, $filename, $type = 0)
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{
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if ($url == '') {
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return false;
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}
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$ext = pathinfo($filename, PATHINFO_EXTENSION);
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if (!in_array($ext, ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'ico', 'tif', 'tiff'])) {
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$ext = pathinfo($url, PATHINFO_EXTENSION);
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if (!in_array($ext, ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'ico', 'tif', 'tiff'])) {
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$ext = 'jpg';
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}
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$filename = $filename . "." . $ext;
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}
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//下载文件流
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if ($type) {
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$ch = curl_init();
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$timeout = 5;
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
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$img = curl_exec($ch);
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curl_close($ch);
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} else {
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ob_start();
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readfile($url);
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$img = ob_get_contents();
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ob_end_clean();
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}
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//保存文件
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// try {
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$fp2 = fopen($filename, 'w');
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fwrite($fp2, $img);
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fclose($fp2);
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return $filename;
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/*} catch (\think\Exception $e) {
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//TODO 异常处理
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return false;
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}*/
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}
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/**
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* 获取文件Mime
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* @param string $ext
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* @return string
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*/
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public static function getMime($ext)
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{
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$mimes = [
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'xml' => 'text/xml',
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'json' => 'application/json',
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'js' => 'text/javascript',
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'php' => 'application/octet-stream',
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'css' => 'text/css',
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'html' => 'text/html',
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'htm' => 'text/html',
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'xhtml' => 'text/html',
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'rss' => 'application/rss+xml',
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'yaml' => 'application/x-yaml',
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'atom' => 'application/atom+xml',
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'pdf' => 'application/pdf',
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'text' => 'text/plain',
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'png' => 'image/png',
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'jpg' => 'image/jpeg',
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'gif' => 'image/gif',
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'csv' => 'text/csv',
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'tif' => 'image/tiff',
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'ai' => 'application/postscript',
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'asp' => 'text/asp',
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'au' => 'audio/basic',
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'avi' => 'video/avi',
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'rmvb' => 'application/vnd.rn-realmedia-vbr',
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'3gp' => 'application/octet-stream',
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'flv' => 'application/octet-stream',
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'mp3' => 'audio/mpeg',
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'wav' => 'audio/wav',
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'sql' => 'application/octet-stream',
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'rar' => 'application/octet-stream',
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'zip' => 'application/zip',
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'7z' => 'application/octet-stream',
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'bmp' => 'application/x-bmp',
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'cdr' => 'application/x-cdr',
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'class' => 'java/*',
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'exe' => 'application/x-msdownload',
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'fax' => 'image/fax',
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'icb' => 'application/x-icb',
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'ico' => 'image/x-icon',
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'java' => 'java/*',
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'jfif' => 'image/jpeg',
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'jpeg' => 'image/jpeg',
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'jsp' => 'text/html',
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'mp4' => 'video/mpeg4',
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'mpa' => 'video/x-mpg',
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'mpeg' => 'video/mpg',
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'mpg' => 'video/mpg',
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'mpga' => 'audio/rn-mpeg',
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'ras' => 'application/x-ras',
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'tiff' => 'image/tiff',
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'txt' => 'text/plain',
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'wax' => 'audio/x-ms-wax',
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'wm' => 'video/x-ms-wm',
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'apk' => 'application/vnd.android.package-archive',
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'doc' => 'application/msword',
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'dot' => 'application/msword',
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'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
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'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
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'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
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'xls' => 'application/vnd.ms-excel',
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'xlt' => 'application/vnd.ms-excel',
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'xla' => 'application/vnd.ms-excel',
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'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
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'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
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'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
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'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
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'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
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'ppt' => 'application/vnd.ms-powerpoint',
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'pot' => 'application/vnd.ms-powerpoint',
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'pps' => 'application/vnd.ms-powerpoint',
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'ppa' => 'application/vnd.ms-powerpoint',
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'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
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'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
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'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
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'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
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'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
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'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
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];
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return isset($mimes[$ext]) ? $mimes[$ext] : 'application/octet-stream';
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}
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/**
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* 下载文件到服务器
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* addtime 2020年8月28日 18:38:43
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*/
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public static function getFile($url, $save_dir = '', $filename = '', $type = 0)
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{
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if (trim($url) == '') {
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return false;
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}
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if (trim($save_dir) == '') {
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$save_dir = './';
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}
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if (0 !== strrpos($save_dir, '/')) {
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$save_dir .= '/';
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}
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//创建保存目录
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if (!file_exists($save_dir) && !mkdir($save_dir, 0777, true)) {
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return false;
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}
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//获取远程文件所采用的方法
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if ($type) {
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$ch = curl_init();
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$timeout = 5;
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
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$content = curl_exec($ch);
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curl_close($ch);
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} else {
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ob_start();
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readfile($url);
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$content = ob_get_contents();
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ob_end_clean();
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}
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$size = strlen($content);
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//文件大小
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$fp2 = @fopen($save_dir . $filename, 'a');
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fwrite($fp2, $content);
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fclose($fp2);
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unset($content, $url);
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$res['code'] = 200;
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$res['file_name'] = $filename;
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return $res;
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}
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/**
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* 检测文件大小
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*/
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public static function getFileSize($url)
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{
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$res = get_headers($url, true);
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$filesize = round($res['Content-Length'] / 1024 / 1024, 2); //四舍五入获取文件大小，单位M
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return $filesize;
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}
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}
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