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重点在curl中指定 Content-Type: application/json; charset=utf-8

   "e10adc3949ba59abbe56e057f20f883e",      "username"=>"canlang"  );  $data = json_encode($param);   list($return_code,$headers,$return_content) = http_post_data($url, $data);print_r($return_content);exit;  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_HEADER, TRUE);		//表示需要response header	    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();  		//获取头部	$header_size	= curl_getinfo($ch, CURLINFO_HEADER_SIZE);	$headers		= substr($return_content, 0, $header_size);		//http状态码	$return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);	      return array($return_code, $headers,$return_content);}

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