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>DBM Functions</TITLE
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>XV. DBM Functions</H1
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><P
>&#13;    These functions allow you to store records stored in a dbm-style
    database. This type of database (supported by the Berkeley DB,
    GDBM, and some system libraries, as well as a built-in flatfile
    library) stores key/value pairs (as opposed to the full-blown
    records supported by relational databases).
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>Example 1. DBM example</B
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>&#13;$dbm = dbmopen ("lastseen", "w");
if (dbmexists ($dbm, $userid)) {
    $last_seen = dbmfetch ($dbm, $userid);
} else {
    dbminsert ($dbm, $userid, time());
}
do_stuff();
dbmreplace ($dbm, $userid, time());
dbmclose ($dbm);
     </PRE
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>Table of Contents</B
></DT
><DT
><A
HREF="function.dbmopen.html"
>dbmopen</A
> &#8212; Opens a DBM database</DT
><DT
><A
HREF="function.dbmclose.html"
>dbmclose</A
> &#8212; Closes a dbm database</DT
><DT
><A
HREF="function.dbmexists.html"
>dbmexists</A
> &#8212; 
     Tells if a value exists for a key in a DBM database
    </DT
><DT
><A
HREF="function.dbmfetch.html"
>dbmfetch</A
> &#8212; 
     Fetches a value for a key from a DBM database
    </DT
><DT
><A
HREF="function.dbminsert.html"
>dbminsert</A
> &#8212; 
     Inserts a value for a key in a DBM database
    </DT
><DT
><A
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>dbmreplace</A
> &#8212; 
     Replaces the value for a key in a DBM database
    </DT
><DT
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HREF="function.dbmdelete.html"
>dbmdelete</A
> &#8212; 
     Deletes the value for a key from a DBM database
    </DT
><DT
><A
HREF="function.dbmfirstkey.html"
>dbmfirstkey</A
> &#8212; 
     Retrieves the first key from a DBM database
    </DT
><DT
><A
HREF="function.dbmnextkey.html"
>dbmnextkey</A
> &#8212; 
     Retrieves the next key from a DBM database</DT
><DT
><A
HREF="function.dblist.html"
>dblist</A
> &#8212; 
     Describes the DBM-compatible library being used
    </DT
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