It is a string function that returns a 32-character md5 hash of "password."  MD5 is 
the name for a current RSA Message Digest Algorithm encryption method.

A search in the manual for md5 gets you to the little bit of information in the manual 
plus a link to RFC 1321 which likely provides more information than you want.

Doug

On Thu, 4 Mar 2004 15:35:52 -0500, Kevin wrote:

>Hi Doug and All,
>
>I am real new to PHP and wanted to know if you can explain the
>[md5("password");]  code? Is this a set function?
>
>Thanks,
>Kevin
>
>----- Original Message ----- 
>
>> On Thu, 04 Mar 2004 12:46:51 -0600, Mignon Hunter wrote:
>>
>> >Can anyone recommend, or does anyone have handy, a script that will
>encrypt passwords AND then also be able to retrieve the encrypted password.
>> >
>> >Checking out the docs and some books has confused me mostly.
>> >
>> >Thx
>> >
>>
>> Yes and no.
>>
>> $pw = md5("password");   works well.
>>
>> However, you cannot decrypt.
>>
>> You store $pw (above) in the database and when a user wants to log in, you
>encrypt their entry and compare it to the value -- also encrypted -- stored
>in the db.  If there is a match, they get in; but you have no knowledge of
>their password(s).  Neither does anyone else who hacks in.
>>
>> hth,
>> Doug
>>
>

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