cURL CURLOPT_WRITEFUNCTION和tmpfile（）

Question

此代碼有效：

// Create temp file to write to
$fp_tmp = tmpfile();

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $name);
curl_setopt($ch, CURLOPT_FILE, $fp_tmp);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_AUTOREFERER, false);
curl_setopt($ch, CURLOPT_REFERER, 'https://dl.dropboxusercontent.com');
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_HEADER, 0);

$result = curl_exec($ch);
curl_close($ch);

// Write the files
$fp = fopen($orderfile->getFileLocation(), 'w');
stream_copy_to_stream($fp_tmp, $fp);

此代碼不：

// Create temp file to write to
$fp_tmp = tmpfile();

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $name);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_AUTOREFERER, false);
curl_setopt($ch, CURLOPT_REFERER, 'https://dl.dropboxusercontent.com');
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $str) use (&$fp_tmp) {
    $length = fwrite($fp_tmp, $str);
    return $length;
});

$result = curl_exec($ch);
curl_close($ch);

// Write the files
$fp = fopen($orderfile->getFileLocation(), 'w');
stream_copy_to_stream($fp_tmp, $fp);

我假設我無法通過“使用”將流傳遞給函數，因為它無法復制數據。 我想我的問題是，如何使用CURLOPT_WRITEFUNCTION將$ str的內容寫入$ fp_tmp？

Answer 1

我是一個虛擬人，我忘記了使用fseek（）重置指針。

// Create temp file to write to
$fp_tmp = tmpfile();

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $name);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_AUTOREFERER, false);
curl_setopt($ch, CURLOPT_REFERER, 'https://dl.dropboxusercontent.com');
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $str) use (&$fp_tmp) {
    $length = fwrite($fp_tmp, $str);
    return $length;
});

$result = curl_exec($ch);
curl_close($ch);

// Write the files
$fp = fopen($orderfile->getFileLocation(), 'w');
fseek($fp_tmp, 0);
stream_copy_to_stream($fp_tmp, $fp);