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If you’re working with a user-management system in PHP (or any scripting language), than you’re likely using either the md5() or crypt() function to encode and store the user’s password.

An oft-asked question - and oft-misunderstood - is what is the difference? Is one better than the other?
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If you’re working on a user-management system, you may find it useful to be able to create a random password for users.

Some systems generate these initially and have the user log in to set a permanent password. You might also have a “Reset” button, where the script generates a random password and e-mails it to the user.

This quick tutorial will show you how to create an 8 character random password containing a mix of letters and numbers. Or, if you’re impatient, jump straight to the function’s source code
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Every php-script that involves some kind of user login and database interaction has one very important feature - password checking and encryption.

There are a bunch of ways you could create and check passwords - from an insecure string in a database to an encrypted “hash” that you check against user input. This tutorial will show you how to use the crypt() function to store and check passwords in a php script.
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