function garPostUrl($url, $d=array(), $header=array(),$method=1) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,TRUE);//是否直接显示内容
    curl_setopt($ch, CURLOPT_TIMEOUT, 50);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
    if ($header) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    }
    curl_setopt($ch, CURLOPT_FAILONERROR, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);


    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

    if($method){
        curl_setopt($ch, CURLOPT_POST,TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $d);
    }
    $resp = curl_exec($ch);
    $curl_eno = curl_errno($ch);
    $curl_err = curl_error($ch);
    curl_close($ch);
    if ($curl_eno != 0) {
        $err = $curl_err;
    } else {
        $err = '';
    }
    return array($err, $resp);
}

$resp=garPostUrl('https://bosonnlp.com/analysis/key','data='.$keyword,array('content-type: application/x-www-form-urlencoded; charset=UTF-8'));