PHP文件下载

流程

1. 获取要下载的文件路径，若为网络文件在php处理时需转为本地路径
2. php处理，判断是否为文件，或者防注入等处理参数
3. 设置header，执行下载

页面

<div><h2>DOWNLOAD</h2><ul><li v-for="(value,key) in dirfiles" :key="key"><a :href="'download.php?path='+value" target="_blank">{{value}}</a></li></ul>
</div>

vue3

let dirfiles =  ref(null);
function getfiles(){const url ="getfiles.php";axios.get(url).then(res=>{dirfiles.value = res.data.data}) .catch(error => {console.error('获取文件失败', error);});
}

php处理

//getfiles.php
include_once "common.php";
$dir = PATH_UPLOAD;
function opendors($dir, $filelist = []) {if ($handle = opendir($dir)) {while (false !== ($file = readdir($handle))) {// 过滤掉当前目录和上一级目录if ($file != "." && $file != "..") {$path = $dir . "/" . $file;if (is_dir($path)) {$filelist = opendors($path, $filelist);} elseif (is_file($path)) {array_push($filelist, $path);}}}closedir($handle);}return $filelist;
}
$filelist = opendors($dir);backjson(1, "获取成功", $filelist);

//download.php
$params = $_GET;
var_dump($params);
$path = $params['path'];
if (!is_file($path)) {backjson(1, "文件不存在");
}
$fileinfo = pathinfo($path);
var_dump($fileinfo);
$filename = $fileinfo['basename'];
$filesize = filesize($path);//设置表头
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $filename);
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . $filesize);
readfile($path);
exit;