其實這不難，只需要發送一個 http Content-Type頭信息即可，即 “Content-Type: application/json; charset=utf-8”，參考代碼如下：
?php
/**
* PHP發送Json對象數據
*
* @param $url 請求url
* @param $jsonStr 發送的json字符串
* @return array
*/
function http_post_json($url, $jsonStr)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonStr);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json; charset=utf-8',
'Content-Length: ' . strlen($jsonStr)
)
);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
return array($httpCode, $response);
}
$url = "http://52php.cnblogs.com";
$jsonStr = json_encode(array('a' => 1, 'b' => 2, 'c' => 2));
list($returnCode, $returnContent) = http_post_json($url, $jsonStr);
API服務端端接收客戶端傳過來的 “Content-Type: application/json; charset=utf-8”頭信息后，再將 http body 數據（即 Json字符串）轉換成 類對象！
