说明

string dbmnextkey ( resource $dbm_identifier , string $key )

Returns the next key after key .

参数

dbm_identifier: The DBM link identifier, returned by dbmopen().
key: The previous key

返回值

The next key if possible

范例

By calling dbmfirstkey() followed by successive calls to dbmnextkey() it is possible to visit every key/value pair in the dbm database. For example:

Example#1 Visiting every key/value pair in a DBM database


<?php

$key = dbmfirstkey($dbm_id);
while ($key) {
    echo "$key = " . dbmfetch($dbm_id, $key) . "\n";
    $key = dbmnextkey($dbm_id, $key);
}

?>

参见

dbmfirstkey()