XI. 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).
Example 1. dbm example 1
2 $dbm = dbmopen("lastseen", "w");
3 if (dbmexists($dbm, $userid)) {
4 $last_seen = dbmfetch($dbm, $userid);
5 } else {
6 dbminsert($dbm, $userid, time());
7 }
8 do_stuff();
9 dbmreplace($dbm, $userid, time());
10 dbmclose($dbm);
11 |
|
- 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
