# dbmfirstkey

(PHP 4)

dbmfirstkey — Retrieves the first key from a DBM database

### Description

string dbmfirstkey ( resource `$dbm_identifier` )

Returns the first key in the database. Note that no particular order is guaranteed since the database may be built using a hash-table, which doesn't guarantee any ordering.

### Parameters

`dbm_identifier`

  The DBM link identifier, returned by dbmopen().

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### See Also

- dbmnextkey()