php sends custom data methods over header

This article describes how to send custom data over header. When sending a request, in addition to sending data using $_ GET/$ _ POST, you can also transfer the data in header.

Send header:

We defined three parameters, token, language and region, and put them into header to send them

<?php
$url = 'http://www.example.com';
$header = array('token:JxRaZezavm3HXM3d9pWnYiqqQC1SJbsU','language:zh','region:GZ');
$content = array(
    'name' => 'fdipzone'
);
$response = tocurl($url, $header, $content);
$data = json_decode($response, true);
echo 'POST data:';
echo '<pre>';
print_r($data['post']);
echo '</pre>';
echo 'Header data:';
echo '<pre>';
print_r($data['header']);
echo '</pre>';
/**
 *  Send data 
 * @param String $url    Requested address 
 * @param Array $header  Custom header Data 
 * @param Array $content POST Data of 
 * @return String
 */
function tocurl($url, $header, $content){
  $ch = curl_init();
  if(substr($url,0,5)=='https'){
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //  Skip certificate checking 
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, true); //  Check from the certificate SSL Does an encryption algorithm exist 
  }
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($content));
  $response = curl_exec($ch);
  if($error=curl_error($ch)){
    die($error);
  }
  curl_close($ch);
  return $response;
}
?>

Receive header

We can get header data in $_SERVER, and all the custom data are prefixed with HTTP_, so we can read out the data prefixed with HTTP_.

<?php
$post_data = $_POST;
$header = get_all_headers();
$ret = array();
$ret['post'] = $post_data;
$ret['header'] = $header;
header('content-type:application/json;charset=utf8');
echo json_encode($ret, JSON_UNESCAPED_UNICODE|JSON_PRETTY_PRINT);
/**
 *  Gets the custom header Data 
 */
function get_all_headers(){
  //  Ignore the obtained header Data 
  $ignore = array('host','accept','content-length','content-type');
  $headers = array();
  foreach($_SERVER as $key=>$value){
    if(substr($key, 0, 5)==='HTTP_'){
      $key = substr($key, 5);
      $key = str_replace('_', ' ', $key);
      $key = str_replace(' ', '-', $key);
      $key = strtolower($key);
      if(!in_array($key, $ignore)){
        $headers[$key] = $value;
      }
    }
  }
  return $headers;
}
?> 

Output:

POST data:
Array
(
  [name] => fdipzone
)
Header data:
Array
(
  [token] => JxRaZezavm3HXM3d9pWnYiqqQC1SJbsU
  [language] => zh
  [region] => GZ
)