我有一個休息 api，端點是getfilestart.php. 它的作用是使用 PDO 在資料庫中搜索檔案名。如何獲取檔案并將其作為檔案回傳或使用郵遞員或在瀏覽器中自動下載？我嘗試了幾種方法，但無法獲取檔案。目錄在../files/
這是下載功能
public function downloadFile($param){
$base_url = $_SERVER['REQUEST_SCHEME']."://".$_SERVER['SERVER_NAME'];
$q = "SELECT * FROM data_file WHERE module_id = ". $param;
$stmt = $this->conn->prepare($q);
$stmt->execute();
$row = $stmt->fetch(PDO::FETCH_ASSOC);
$filename = $row['file_name'];
$request_url = $base_url .'/mtc_project_server/files/'.$filename;
}
如果我轉儲 request_url 它http://localhost/mtc_project_server/files/mir4.PNG是實際檔案。我如何使用rest下載它？我嘗試做 cURL 和 file_get_contents ，但仍然無法正常作業。提前致謝
uj5u.com熱心網友回復：
從您的下載檔案 URL $request_url。
這是服務器端的強制下載源代碼。
// https://stackoverflow.com/questions/7263923/how-to-force-file-download-with-php
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"" . basename($request_url) . ".jpg\"");
readfile($request_url);
exit();// end process to prevent any problems.
這是在客戶端下載作業的源代碼。
$url = 'https://my-domain.tld/rest-api/path.php';// change this to your REST API URL.
// https://stackoverflow.com/questions/6409462/downloading-a-large-file-using-curl
$fileext = pathinfo($url, PATHINFO_EXTENSION);
echo $fileext;
set_time_limit(0);
// For save data to temp file.
$fp = fopen (__DIR__ . '/localfile.tmp', 'w ');
//Here is the file we are downloading, replace spaces with
$ch = curl_init(str_replace(" "," ",$url));
curl_setopt($ch, CURLOPT_TIMEOUT, 50);
// write curl response to file
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
// get curl response
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($response, 0, $header_size);
$body = substr($response, $header_size);
fwrite($fp, $body);
curl_close($ch);
fclose($fp);
// rename temp file.
preg_match('/filename=[\'"]?([\w\d\.\-_] )[\'"]?/i', $header, $matches);
var_dump($matches);
if (isset($matches[1]) && !is_file(__DIR__ . '/' . $matches[1])) {
// if target rename file is not exists.
rename(__DIR__ . '/localfile.tmp', __DIR__ . '/' . $matches[1]);
} else {
// for debug
echo 'something wrong!<br>';
var_dump($matches);
echo '<br>';
echo 'File was downloaded into ' . __DIR__ . '/localfile.tmp';
exit();
}
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/366231.html