http://www.php.net/manual/en/faq.passwords.php#faq.passwords.fasthash
I’m storing user passwords in a MySQL database in hash form. Does this mean that it is unsafe to do so? If it is, what are my alternatives?
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The next question in the FAQ you linked to discusses it: How should I hash my passwords, if the common hash functions are not suitable?
From the FAQ:
The question following that is about salt.