PHP中使用CURL實現GET、POST、PUT、DELETE請求

/**
 * @param $url
 * @param $data
 * @param string $method
 * @param string $type
 * @return bool|string
 */
function curlData($url,$data,$method = 'GET',$type='json')
{
    //初始化
    $ch = curl_init();
    $headers = [
        'form-data' => ['Content-Type: multipart/form-data'],
        'json'      => ['Content-Type: application/json'],
    ];
    if($method == 'GET'){
        if($data){
            $querystring = http_build_query($data);
            $url = $url.'?'.$querystring;
        }
    }
    // 請求頭，能夠傳數組
    curl_setopt($ch, CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_HTTPHEADER,$headers[$type]);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);         // 執行後不直接打印出來
    if($method == 'POST'){
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST,'POST');     // 請求方式
        curl_setopt($ch, CURLOPT_POST, true);               // post提交
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);              // post的變量
    }
    if($method == 'PUT'){
        curl_setopt ($ch, CURLOPT_CUSTOMREQUEST, "PUT");
        curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
    }
    if($method == 'DELETE'){
        curl_setopt ($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
        curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
    }
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 跳過證書檢查
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); // 不從證書中檢查SSL加密算法是否存在
    $output = curl_exec($ch); //執行並獲取HTML文檔內容
    curl_close($ch); //釋放curl句柄
    return $output;
}