Helpers.php
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<?php
/*
* This file is part of the overtrue/wechat.
*
* (c) overtrue <i@overtrue.me>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace EasyWeChat\Kernel\Support;
/*
* helpers.
*
* @author overtrue <i@overtrue.me>
*/
/**
* Generate a signature.
*
* @param string $key
* @param string $encryptMethod
*
* @return string
*/
function generate_sign(array $attributes, $key, $encryptMethod = 'md5')
{
ksort($attributes);
$attributes['key'] = $key;
return strtoupper(call_user_func_array($encryptMethod, [urldecode(http_build_query($attributes))]));
}
/**
* @return \Closure|string
*/
function get_encrypt_method(string $signType, string $secretKey = '')
{
if ('HMAC-SHA256' === $signType) {
return function ($str) use ($secretKey) {
return hash_hmac('sha256', $str, $secretKey);
};
}
return 'md5';
}
/**
* Get client ip.
*
* @return string
*/
function get_client_ip()
{
if (!empty($_SERVER['REMOTE_ADDR'])) {
$ip = $_SERVER['REMOTE_ADDR'];
} else {
// for php-cli(phpunit etc.)
$ip = defined('PHPUNIT_RUNNING') ? '127.0.0.1' : gethostbyname(gethostname());
}
return filter_var($ip, FILTER_VALIDATE_IP) ?: '127.0.0.1';
}
/**
* Get current server ip.
*
* @return string
*/
function get_server_ip()
{
if (!empty($_SERVER['SERVER_ADDR'])) {
$ip = $_SERVER['SERVER_ADDR'];
} elseif (!empty($_SERVER['SERVER_NAME'])) {
$ip = gethostbyname($_SERVER['SERVER_NAME']);
} else {
// for php-cli(phpunit etc.)
$ip = defined('PHPUNIT_RUNNING') ? '127.0.0.1' : gethostbyname(gethostname());
}
return filter_var($ip, FILTER_VALIDATE_IP) ?: '127.0.0.1';
}
/**
* Return current url.
*
* @return string
*/
function current_url()
{
$protocol = 'http://';
if ((!empty($_SERVER['HTTPS']) && 'off' !== $_SERVER['HTTPS']) || ($_SERVER['HTTP_X_FORWARDED_PROTO'] ?? 'http') === 'https') {
$protocol = 'https://';
}
return $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
}
/**
* Return random string.
*
* @param string $length
*
* @return string
*/
function str_random($length)
{
return Str::random($length);
}
/**
* @param string $content
* @param string $publicKey
*
* @return string
*/
function rsa_public_encrypt($content, $publicKey)
{
$encrypted = '';
openssl_public_encrypt($content, $encrypted, openssl_pkey_get_public($publicKey), OPENSSL_PKCS1_OAEP_PADDING);
return base64_encode($encrypted);
}