php发送post请求

$post_data['WIDout_trade_no'] = $_POST['trade_number'];
    $post_data['WIDsubject'] = $_POST['trade_name'];
    $post_data['WIDtotal_fee'] = $_POST['trade_price'];
    $post_data['WIDbody'] = "付款问题请联系客服QQ/vx:768624766";


    $url = './create_order/alipayapi.php';
    $html_text=send_post($url,$post_data);
    echo $html_text;

/**
 * 模拟post进行url请求
 * @param string $url
 * @param array $post_data
 */


function send_post($url, $post_data) {
    $postdata = http_build_query($post_data);
    $options = array(
        'http' => array(
            'method' => 'POST',
            'header' => 'Content-type:application/x-www-form-urlencoded',
            'content' => $postdata,
            'timeout' => 15 * 60 // 超时时间（单位:s）
        )
    );
    $context = stream_context_create($options);
    $result = file_get_contents($url, false, $context);
    return $result;
}

也有人喜欢用curl 不过主要是用线上的https地址测试

function curl_post($url, $post)
{
    $options = array(
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HEADER => false,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => $post,
    );

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不验证证书下同
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt_array($ch, $options);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}