dba_firstkey Fetch first key php函数


dba_firstkey

(PHP 4, PHP 5)

dba_firstkeyFetch first key

说明

string dba_firstkey ( resource $handle )

dba_firstkey() returns the first key of the database and resets the internal key pointer. This permits a linear search through the whole database.

参数

handle

The database handler, returned by dba_open() or dba_popen().

返回值

Returns the key on success 或者在失败时返回 FALSE.

参见

  • dba_nextkey() - Fetch next key
  • dba_key_split() - Splits a key in string representation into array representation
  • Example 2 in the DBA examples



相关阅读:
dba_handlers List all the handlers available
dba_insert Insert entry
dba_key_split Splits a key in string representation into array representation
dba_list List all open database files
dba_nextkey Fetch next key
dba_open Open database
dba_optimize Optimize database
dba_popen Open database persistently
dba_replace Replace or insert entry
dba_sync Synchronize database
dcgettext Overrides the domain for a single lookup
dcngettext Plural version of dcgettext
deaggregate Removes the aggregated methods and properties from an object
debug_backtrace Generates a backtrace
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