XX. DBM Functions
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
$dbm = dbmopen ("lastseen", "w");
if (dbmexists ($dbm, $userid)) {
$last_seen = dbmfetch ($dbm, $userid);
} else {
dbminsert ($dbm, $userid, time());
}
do_stuff();
dbmreplace ($dbm, $userid, time());
dbmclose ($dbm);
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- Table of Contents
- dbmopen -- Opens a DBM database
- dbmclose -- Closes a dbm database
- dbmexists -- Tells if a value exists for a key
in a DBM database
- dbmfetch -- Fetches a value for a key from a
DBM database
- dbminsert -- Inserts a value for a key in a
DBM database
- dbmreplace -- Replaces the value for a key in
a DBM database
- dbmdelete -- Deletes the value for a key from
a DBM database
- dbmfirstkey -- Retrieves the first key from
a DBM database
- dbmnextkey -- Retrieves the next key from a
DBM database
- dblist -- Describes the DBM-compatible library
being used
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