我有这个功能:
public function getCode($secret, $timeSlice = null)
{
if ($timeSlice === null) {
$timeSlice = floor(time() / 30);
}
$secretkey = $this->_base32Decode($secret);
// Pack time into binary string
$time = chr(0).chr(0).chr(0).chr(0).pack('N*', $timeSlice);
// Hash it with users secret key
$hm = hash_hmac('SHA1', $time, $secretkey, true);
// Use last nipple of result as index/offset
$offset = ord(substr($hm, -1)) & 0x0F;
// grab 4 bytes of the result
$hashpart = substr($hm, $offset, 4);
// Unpak binary value
$value = unpack('N', $hashpart);
$value = $value[1];
// Only 32 bits
$value = $value & 0x7FFFFFFF;
$modulo = pow(10, $this->_codeLength);
return str_pad($value % $modulo, $this->_codeLength, '0', STR_PAD_LEFT);
}
从秘密给我2FA代码,但我不知道如何在另一页上调用该函数以及如何配置$timeslice
参数。谢谢 :)
为了从另一个文件调用该函数,您需要在启动调用之前使用include或require文件。之后你可以调用函数(假设你的$ timeSlice变量需要300),如:
require 'functions_file.php';
$The_code = getCode("this is a secret", 300);
如果函数是类的一部分,则必须实例化类(假设类名为FunctionClass
):
require 'functions_file.php';
$Instantiated_Class = new FunctionClass();
$The_code = $Instantiated_Class->getCode("this is a secret", 300);
或者你可以这样做:
require 'functions_file.php';
$The_code = FunctionClass::getCode("this is a secret", 300);