How can errors in cURL requests be properly handled in PHP to ensure smooth file transfers?

When making cURL requests in PHP for file transfers, it is important to properly handle errors to ensure smooth transfers. One way to do this is by checking for errors using the `curl_errno` and `curl_error` functions after executing the cURL request. If an error occurs, you can handle it gracefully by logging the error or taking appropriate action. 

$ch = curl_init();
$url = "http://example.com/file.zip";
$file = fopen("file.zip", 'w');

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FILE, $file);

$result = curl_exec($ch);

if(curl_errno($ch)) {
    echo 'Error: ' . curl_error($ch);
    // handle the error here
} else {
    echo 'File transfer successful!';
}

curl_close($ch);
fclose($file);

Keywords

cURL PHP error handling file transfer smooth.

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