# ldap_exop_refresh

(PHP 7 >= 7.3.0)

ldap_exop_refresh — Refresh extended operation helper

### 说明

ldap_exop_refresh ( resource `$link` , string `$dn` , int `$ttl` ) : int

Performs a Refresh extended operation and returns the data.

### 参数

`link`

  An LDAP link identifier, returned by ldap_connect().

`dn`

  dn of the entry to refresh.

`ttl`

  Time in seconds (between 1 and 31557600) that the client requests that the entry exists in the directory before being automatically removed.

### 返回值

From RFC: The responseTtl field is the time in seconds which the server chooses to have as the time-to-live field for that entry. It must not be any smaller than that which the client requested, and it may be larger. However, to allow servers to maintain a relatively accurate directory, and to prevent clients from abusing the dynamic extensions, servers are permitted to shorten a client-requested time-to-live value, down to a minimum of 86400 seconds (one day). `FALSE` will be returned on error.

### 参见

- ldap_exop() - Performs an extended operation