PHP post data and file - multipart-form-data

httpPostData.php

<?php
/*
 * use like: 
 * httpPostDataFile(
 *   'https://www.google.com/search', // the url to post to, optionally including get parameters like: ?this=that&here=there
 *   [
 *     'q' => 'php http upload file', // post data like: <input name="q" value="php http upload file" />
 *      ...
 *   ], [
 *     'image' => [ // the input name used like: <input name="image" type="file" />
 *        'file' => './images/profile.jpg', // path and name of the file to upload, alternatively use 'data' below
 *        //'data' => 'ÿØÿà  JFIF', // if file data is temporary and not available on the filesystem, you can provide it here directly
 *        'name' => 'imyself.jpg', // the name of the file being uploaded as seen by the server
 *        'content_type' => 'image/jpeg' // optional, defaults to plain/text
 *      ],
 *      ...
 *    ]
 *  );
*/
function httpPostDataFile($url, $post_data = null, $files = null) {
	$boundary = md5(microtime());
	$options = array(
    		// use key 'http' even if you send the request to https://...
		'http' => array(
			'header'  => "Content-Type: multipart/form-data; boundary=" . $boundary . "\r\n",
			'method'  => 'POST',
		),
	);
	if(is_array($post_data)) foreach($post_data as $name => $data) {
		$options['http']['content'] .= '--' . $boundary . '
Content-Disposition: form-data; name="' . $name . '"

' . $data . '
';
	}
	if(is_array($files)) foreach($files as $field => $file) {
		$options['http']['content'] .= '--' . $boundary . '
Content-Disposition: form-data; name="' . $field . '"; filename="' . basename($file['name']) . '"
Content-Type: ' . !isset($file['content_type']) ? 'plain/text' : $file['content_type'] . '
Content-Transfer-Encoding: base64

' . chunk_split(base64_encode(!isset($file['data']) ? file_get_contents($file['file']) : $file['data'])) . '
';
	}
	if(is_array($post_data) && count($post_data) || is_array($files) && count($files)) {
		$options['http']['content'] .= '--' . $boundary . '--
';
	}
	$context = stream_context_create($options);
	return file_get_contents($url, false, $context);
}

you better put "\r\n" instead of line breaks