php post发送数据包以及解析post数据包

１、发送　index.php

header("Content-Type: text/html;charset=utf-8");
function http_post_data($url, $data_string) {  
$ch = curl_init();  
curl_setopt($ch, CURLOPT_POST, 1);  
curl_setopt($ch, CURLOPT_URL, $url);  
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);  
curl_setopt($ch, CURLOPT_HTTPHEADER, array(  
'Content-Type: application/json; charset=utf-8',  
'Content-Length: ' . strlen($data_string))  
);  
ob_start();  
curl_exec($ch);  
$return_content = ob_get_contents();  
ob_end_clean();  


$return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);  
return array($return_code, $return_content);  
}  
  
$url  = "http://localhost/test/api.php";  
$data = json_encode(array('a'=>111, 'b'=>2222));   
  
list($return_code, $return_content) = http_post_data($url, $data);  
echo $return_code."--".$return_content;

2、解包：　api.php

header("Content-Type: text/html;charset=utf-8");

//两种方式都可以
echo file_get_contents("php://input");
#echo $GLOBALS["HTTP_RAW_POST_DATA"];