# ibase_backup

(PHP 5, PHP 7 < 7.4.0)

ibase_backup — Initiates a backup task in the service manager and returns immediately

### 说明

ibase_backup(
resource `$service_handle`,
string `$source_db`,
string `$dest_file`,
int `$options` = 0,
bool `$verbose` = `false`
): mixed

This function passes the arguments to the (remote) database server. There it starts a new backup process. Therefore you won't get any responses.

### 参数

`service_handle`
  A previously opened connection to the database server.
`source_db`
  The absolute file path to the database on the database server. You can also use a database alias.
`dest_file`
  The path to the backup file on the database server.
`options`

  Additional options to pass to the database server for backup. The `options` parameter can be a combination of the following constants: `IBASE_BKP_IGNORE_CHECKSUMS`, `IBASE_BKP_IGNORE_LIMBO`, `IBASE_BKP_METADATA_ONLY`, `IBASE_BKP_NO_GARBAGE_COLLECT`, `IBASE_BKP_OLD_DESCRIPTIONS`, `IBASE_BKP_NON_TRANSPORTABLE` or `IBASE_BKP_CONVERT`. Read the section about 预定义常量 for further information.

`verbose`
  Since the backup process is done on the database server, you don't have any chance to get its output. This argument is useless.

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

Since the backup process is done on the (remote) server, this function just passes the arguments to it. While the arguments are legal, you won't get `false`.

### 示例

示例 #1 ibase_backup() example

`<?php
// Attach to database server by ip address and port
$service = ibase_service_attach ('10.1.11.200/3050', 'sysdba', 'masterkey');
// Start the backup process on database server
// Backup employee database using full path to /srv/backup/employees.fbk
// Don't use any special arguments
ibase_backup($service, '/srv/firebird/employees.fdb', '/srv/backup/employees.fbk');
// Free the attached connection
ibase_service_detach ($service);
?>`

示例 #2 ibase_backup() example with arguments

`<?php
// Attach to database server by name and default port
$service = ibase_service_attach ('fb-server.contoso.local', 'sysdba', 'masterkey');
// Start the backup process on database server
// Backup employee database using alias to /srv/backup/employees.fbk.
// Backup only the metadata. Don't create a transportable backup.
ibase_backup($service, 'employees.fdb', '/srv/backup/employees.fbk', IBASE_BKP_METADATA_ONLY | IBASE_BKP_NON_TRANSPORTABLE);
// Free the attached connection
ibase_service_detach ($service);
?>`

### 参见

- ibase_restore() - Initiates a restore task in the service manager and returns immediately

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