Firebase using php curl

Firebase.php

<?php

define('FIREBASE_HOST','https://?????????????????.firebaseio.com');
define('FIREBASE_AUTH','????????????????????????????????????????');

function exec_curl_request($handle) {
	$response = curl_exec($handle);
	if ($response === false) {
		$errno = curl_errno($handle);
		$error = curl_error($handle);
		error_log("Curl returned error $errno: $error\n");
		curl_close($handle);
		return false;
	}
  
	$http_code = intval(curl_getinfo($handle, CURLINFO_HTTP_CODE));
	curl_close($handle);
    
	if ($http_code >= 500) {
		sleep(10);
		return false;
	} elseif ($http_code != 200) {
		$response = json_decode($response, true);
		error_log("HTTP Status Code: ".$http_code.". ".$response['error']."\n");
		return false;
	} else {
		$response = json_decode($response, true);
	}
  
	return $response;
}

function FirebaseRequest($method="GET", $path="/", $parameters=""){
	if (!is_string($method)) {
		error_log("Method name must be a string\n");
		return false;
	}
	if (!is_string($path)) {
		error_log("Path must be a string\n");
		return false;
	}
	if (is_array($parameters)) {
		$parameters=json_encode($parameters);
	}
  
	$handle = curl_init(FIREBASE_HOST.$path.'.json?auth='.FIREBASE_AUTH);
	curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($handle, CURLOPT_CONNECTTIMEOUT, 5);
	curl_setopt($handle, CURLOPT_TIMEOUT, 60);
	curl_setopt($handle, CURLOPT_CUSTOMREQUEST, $method);
	curl_setopt($handle, CURLOPT_POSTFIELDS, $parameters);
  
	return exec_curl_request($handle);
}

// Write
$r = FirebaseRequest("PUT", "/path/id", 1);

// Update
$r = FirebaseRequest("PATCH", "/path", array( 'id' => 2, 'name' => "hello"));

// Lists
$r = FirebaseRequest("POST", "/path", array( 'id' => 3, 'name' => "world"));

// Read
$r = FirebaseRequest("GET", "/path");

// Delete
// $r = FirebaseRequest("DELETE", "/path");

echo "<pre>".print_r($r,true)."</pre>";

?>