在成功檢索媒體 URL 并將其存盤在 $mediaURL 變數中以進行檔案請求后，我正在使用以下代碼行 (PHP)，但它回傳一個空字串。已經嘗試使用郵遞員，它回傳 500 內部服務器錯誤...
** 已編輯 **
self::writeLog('Media URL: '.$mediaURL);
self::writeLog('Preparing to download media - id: '.$media_id);
$curl = curl_init($mediaURL);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$headers = array(
"Authorization: Bearer ".self::$auth_token,
);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
if (($resp = curl_exec($curl)) === false) {
self::writeLog('cURL Error: '.curl_error($curl));
} else if ($resp == '') {
self::writeLog('Empty string.');
self::writeLog('URL: '.$mediaURL);
self::writeLog('Headers: '.$headers[0]);
} else {
self::writeLog($resp);
}
- writeLog 只是我用來將這些訊息寫入 txt 檔案的一種方法。
uj5u.com熱心網友回復：
我之前遇到過這個問題，原因是沒有傳遞User-Agent給 API 導致錯誤的值回傳
我使用以下方法下載了 whatsapp-cloud 媒體，它適用于我
public function grabImage(string $url,string $saveto) : bool {
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 400);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch,CURLOPT_CUSTOMREQUEST , "GET");
curl_setopt($ch,CURLOPT_ENCODING , "");
$headers = [];
$headers[] = "Authorization: Bearer " . self::$adminToken;
$headers[] = "Accept-Language:en-US,en;q=0.5";
$headers[] = "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36";
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$raw = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if((int)$httpcode == 200){
// here save the $row content of file
}
return false;
}
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