PHP method to upload files in response to post request

The example in this article describes the method of PHP responding to post requestuploading files. Share it with everyone for your reference, the details are as follows:

function send_file($url, $post = '', $file = '') {
  $eol = "\r\n";
  $mime_boundary = md5 ( time () );
  $data = '';
  $confirmation = '';
  date_default_timezone_set ( "Asia/Shanghai" );
  $time = date ( "Y-m-d H:i:s " );
  $post ["filename"] = $file [filename];
  foreach ( $post as $key => $value ) {
    $data .= '--' . $mime_boundary . $eol;
    $data .= 'Content-Disposition: form-data; ';
    $data .= "name=" . $key . $eol . $eol;
    $data .= $value . $eol;
  }
  $data .= '--' . $mime_boundary . $eol;
  $data .= 'Content-Disposition: form-data; name=' . $file [name] . '; filename=' . $file [filename] . $eol;
  $data .= 'Content-Type: text/plain' . $eol;
  $data .= 'Content-Transfer-Encoding: binary' . $eol . $eol;
  $data .= $file [filedata] . $eol;
  $data .= "--" . $mime_boundary . "--" . $eol . $eol;
  $params = array ('http' => array ('method' => 'POST', 'header' => 'Content-Type: multipart/form-data;boundary=' . $mime_boundary . $eol, 'content' => $data ) );
  $ctx = stream_context_create ( $params );
  $response = file_get_contents ( $url, FILE_TEXT, $ctx );
  return $response;
}

I hope this article will be helpful to everyone in PHP programming.

The above introduces the method of uploading files in PHP in response to post requests, including the content of uploading files. I hope it will be helpful to friends who are interested in PHP tutorials.