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<?php
/**
* Firebase PHP Client Library
*
* @author Tamas Kalman <ktamas77@gmail.com>
* @link https://www.firebase.com/docs/rest-api.html
*
*/
/**
* Firebase PHP Class
*
* @author Tamas Kalman <ktamas77@gmail.com>
* @link https://www.firebase.com/docs/rest-api.html
*
*/
class Firebase
{
private $_baseURI;
private $_timeout;
private $_token;
/**
* Constructor
*
* @param String $baseURI Base URI
*
* @return void
*/
function __construct($baseURI = '', $token = '')
{
if (!extension_loaded('curl')) {
trigger_error('Extension CURL is not loaded.', E_USER_ERROR);
}
$this->setBaseURI($baseURI);
$this->setTimeOut(10);
$this->setToken($token);
}
/**
* Sets Token
*
* @param String $token Token
*
* @return void
*/
public function setToken($token)
{
$this->_token = $token;
}
/**
* Sets Base URI, ex: http://yourcompany.firebase.com/youruser
*
* @param String $baseURI Base URI
*
* @return void
*/
public function setBaseURI($baseURI)
{
$baseURI .= (substr($baseURI, -1) == '/' ? '' : '/');
$this->_baseURI = $baseURI;
}
/**
* Returns with the normalized JSON absolute path
*
* @param String $path to data
*/
private function _getJsonPath($path)
{
$url = $this->_baseURI;
$path = ltrim($path, '/');
$auth = ($this->_token == '') ? '' : '?auth=' . $this->_token;
return $url . $path . '.json' . $auth;
}
/**
* Sets REST call timeout in seconds
*
* @param Integer $seconds Seconds to timeout
*
* @return void
*/
public function setTimeOut($seconds)
{
$this->_timeout = $seconds;
}
/**
* Writing data into Firebase with a PUT request
* HTTP 200: Ok
*
* @param String $path Path
* @param Mixed $data Data
*
* @return Array Response
*/
public function set($path, $data)
{
return $this->_writeData($path, $data, 'PUT');
}
/**
* Pushing data into Firebase with a POST request
* HTTP 200: Ok
*
* @param String $path Path
* @param Mixed $data Data
*
* @return Array Response
*/
public function push($path, $data)
{
return $this->_writeData($path, $data, 'POST');
}
/**
* Updating data into Firebase with a PATH request
* HTTP 200: Ok
*
* @param String $path Path
* @param Mixed $data Data
*
* @return Array Response
*/
public function update($path, $data)
{
return $this->_writeData($path, $data, 'PATCH');
}
/**
* Reading data from Firebase
* HTTP 200: Ok
*
* @param String $path Path
*
* @return Array Response
*/
public function get($path)
{
try {
$ch = $this->_getCurlHandler($path, 'GET');
$return = curl_exec($ch);
curl_close($ch);
} catch (Exception $e) {
$return = null;
}
return $return;
}
/**
* Deletes data from Firebase
* HTTP 204: Ok
*
* @param type $path Path
*
* @return Array Response
*/
public function delete($path)
{
try {
$ch = $this->_getCurlHandler($path, 'DELETE');
$return = curl_exec($ch);
curl_close($ch);
} catch (Exception $e) {
$return = null;
}
return $return;
}
/**
* Returns with Initialized CURL Handler
*
* @param String $mode Mode
*
* @return CURL Curl Handler
*/
private function _getCurlHandler($path, $mode)
{
$url = $this->_getJsonPath($path);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, $this->_timeout);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $this->_timeout);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $mode);
return $ch;
}
private function _writeData($path, $data, $method = 'PUT')
{
$jsonData = json_encode($data);
$header = array(
'Content-Type: application/json',
'Content-Length: ' . strlen($jsonData)
);
try {
$ch = $this->_getCurlHandler($path, $method);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);
$return = curl_exec($ch);
curl_close($ch);
} catch (Exception $e) {
$return = null;
}
return $return;
}
}
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