[yellow code] PHP saves remote resources locally

   Ah yard generally has less nonsense , Just dump the code , Don't know how to buckle me , If you don't understand it, you can only buckle your feet ,OK？

/**
 *  Save remote resources locally 
 * @param string $source  Resources to address 
 * @param string $local  Local address 
 * @return array
 */
private function execDown($source,$local)
{
    if (!is_dir(dirname($local))) {
        mkdir(dirname($local),0755,true);
    }
    $localFile = fopen($local, 'w');
    $ch = curl_init(); //  initialization  cURL  conversation 
    curl_setopt($ch,CURLOPT_URL,$source); //  Remote address 
    curl_setopt($ch, CURLOPT_POST, 0); //  Not POST request 
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3000); //  Maximum waiting time for successful connection 
    curl_setopt($ch, CURLOPT_FILE, $localFile); //  The local path 
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // https request   Do not verify certificate 
    curl_exec($ch);
    if (curl_error($ch)) {
        $res = [
            'status' => 0,
            'message' => curl_error($ch),
            'time' => 0,
            'fileinfo' => []
        ];
        fclose($localFile);
        curl_close($ch);
        return $res;
    } else {
        $info = curl_getinfo($ch);
        curl_close($ch);
        fclose($localFile);
        if (filesize($local) != $info['size_download']) {
            $res = [
                'status' => 0,
                'message' => ' Incomplete download data , Please download again ',
                'time' => $info['total_time'],
                'fileinfo' => []
            ];
            return $res;
        }
        $res = [
            'status' => 1,
            'message' => ' Download complete ',
            'time' => $info['total_time'],
            'fileinfo' => [
                'file_type' => $info['content_type'],
                'file_size' => $info['size_download'],
                'remote_path' => $source,
                'local_path' => $local,
            ]
        ];
        return $res;
    }
}