# dbase_pack

(PHP 5 < 5.3.0, dbase 5, dbase 7)

dbase_pack — Packs a database

### 说明

dbase_pack ( resource `$dbase_identifier` ) : bool

Packs the specified database by permanently deleting all records marked for deletion using dbase_delete_record(). Note that the file will be truncated after successful packing (contrary to dBASE III's PACK command).

### 参数

`dbase_identifier`

  The database link identifier, returned by dbase_open() or dbase_create().

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 更新日志

版本 | 说明
--- | ---
dbase 7.0.0 | `dbase_identifier` is now a resource instead of an int.

### 范例

Example #1 Emptying a dBase database

    <?php

    // open in read-write mode
    $db = dbase_open('/tmp/test.dbf', 2);

    if ($db) {
      $record_numbers = dbase_numrecords($db);
      for ($i = 1; $i <= $record_numbers; $i++) {
          dbase_delete_record($db, $i);
      }
      // expunge the database
      dbase_pack($db);
    }

    ?>

### 参见

- dbase_delete_record() - Deletes a record from a database