php post json参数的传递和接收处理方法

页面1 ，php传递json参数的页面：

1.php

<? 
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(); 
  //echo $return_content."<br>"; 
  ob_end_clean(); 
 
  $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); 
  // return array($return_code, $return_content); 
  return $return_content; 
 } 
 
$url = "http://127.0.0.1/2.php"; 
$data = json_encode(array('a'=>"weqweqwe", 'b'=>2));  
 
//list($return_code, $return_content) = http_post_data($url, $data); 
$aaa = http_post_data($url, $data); 
//print_r($aaa); 
echo $aaa; 
 
$ccc=json_decode($aaa); 
print_r($ccc); 
echo $ccc->b; 
 
echo "<hr>"; 
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; 
var_dump(json_decode($json,true)); 
　 
?> 

页面2，参数接收处理：

2.php

<? 
$postData = file_get_contents('php://input'); 
echo $postData; 
$data = json_encode(array('a'=>" 234 ", 'b'=>2)); 
echo $data; 
?> 

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