Util.php
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<?php
/**
* Util.php
*
* The Util class file.
*
* PHP versions 5
*
* @author Alexander Schneider <alexanderschneider85@gmail.com>
* @copyright 2008-2017 Alexander Schneider
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2
* @version SVN: $id$
* @link http://wordpress.org/extend/plugins/user-access-manager/
*/
declare(strict_types=1);
namespace UserAccessManager\Util;
use Exception;
use UserAccessManager\Wrapper\Php;
/**
* Class Util
*
* @package UserAccessManager\Util
*/
class Util
{
/**
* @var Php
*/
private $php;
/**
* Util constructor.
* @param Php $php
*/
public function __construct(Php $php)
{
$this->php = $php;
}
/**
* Checks if a string starts with the given needle.
* @param string $haystack The haystack.
* @param string $needle The needle.
* @return bool
*/
public function startsWith(string $haystack, string $needle): bool
{
return $needle === '' || strpos($haystack, $needle) === 0;
}
/**
* Checks if a string ends with the given needle.
* @param string $haystack
* @param string $needle
* @return bool
*/
public function endsWith(string $haystack, string $needle): bool
{
return $needle === '' || substr($haystack, -strlen($needle)) === $needle;
}
/**
* Generates and returns a random password.
* @param int $length
* @return string
* @throws Exception
*/
public function getRandomPassword($length = 32): string
{
$bytes = $this->php->opensslRandomPseudoBytes($length + 1, $strong);
if ($bytes !== false && $strong === true) {
return substr(preg_replace('/[^a-zA-Z0-9]/', '', base64_encode($bytes)), 0, $length);
} else {
throw new Exception('Unable to generate secure token from OpenSSL.');
}
}
/**
* Returns the current url.
* @return string
*/
public function getCurrentUrl(): string
{
if (isset($_SERVER['REQUEST_URI']) === false) {
$serverRequestUri = $_SERVER['PHP_SELF'];
} else {
$serverRequestUri = $_SERVER['REQUEST_URI'];
}
$https = $_SERVER['HTTPS'] ?? '';
$secure = $https === 'on' ? 's' : '';
$protocols = explode('/', strtolower($_SERVER['SERVER_PROTOCOL']));
$protocol = $protocols[0] . $secure;
$port = ((int) $_SERVER['SERVER_PORT'] === 80) ? '' : (':' . $_SERVER['SERVER_PORT']);
return $protocol . '://' . $_SERVER['SERVER_NAME'] . $port . $serverRequestUri;
}
}