hashalgorithm

问题 I got AdventureWorks2012 DB from http://msftdbprodsamples.codeplex.com/releases/view/55330 and trying to ValidatePassword from Person.Password table. 'PasswordHash' column description says "Password for the e-mail account." and 'PasswordSalt' column description says "Random value concatenated with the password string before the password is hashed." Here are the sample data from the DB: BusinessEntityID, PasswordHash, PasswordSalt, EmailAddress ---------------- --------------------------------

问题 My PHP version is 5.2.11 which is higher than the required version for hash_algos. however, when I run it either via web or command line, it returns Fatal error: Call to undefined function hash_algos() So as for other Hash functions. Do i have to turn anything on in the php.inin or what should I do? I have checked the php --re hash and the extension isn't there. I am very sure it is either not there or disabled. I also tried to installed it (PECL) but don't know how. 回答1: You'll need to

问题 I'm a PHP developer and a little out of my element in C#. In PHP, there's a crc32() function which returns a signed integer for any string that you pass in. So this is what I'm used to: <?php echo crc32("test"); // displays -662733300 I would like to do the same thing in C#. I came across this C# class library but understand little about it. According to his instructions, I'm supposed to do this: // first convert string to byte-array String input = "test"; byte[] bytes = new byte[input.length