private function setPostFields(array $post_data)
    {
        $pd = [];
        foreach ($post_data as $k => $v) {
            $pd[] = "$k=$v";
        }
        $pd = implode("&", $pd);
        \Unirest\Request::curlOpt(CURLOPT_POST, true);
        \Unirest\Request::curlOpt(CURLOPT_POSTFIELDS, $pd);
        \Unirest\Request::curlOpt(CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']);
    }
private function setPostFields(array $post_data)
    {
        $pd = [];
        foreach ($post_data as $k => $v) {
            $pd[] = "$k=$v";
        }
        $pd = implode("&", $pd);
        \Unirest\Request::curlOpt(CURLOPT_POST, true);
        \Unirest\Request::curlOpt(CURLOPT_POSTFIELDS, $pd);
        \Unirest\Request::curlOpt(CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']);
    }
private function setPostFields ( array $ post_data ) { $ pd = [ ] ; foreach ( $ post_data as $ k => $ v ) { $ pd [ ] = "$k=$v" ; } $ pd = implode ( "&" , $ pd ) ; \ Unirest \ Request :: curlOpt ( CURLOPT_POST , true ) ; \ Unirest \ Request :: curlOpt ( CURLOPT_POSTFIELDS , $ pd ) ; \ Unirest \ Request :: curlOpt ( CURLOPT_HTTPHEADER , [ 'Content-Type: application/x-www-form-urlencoded' ] ) ; }
set post fields.

@param array $post_data
set post fields .