PHP Manual: Replace attribute values with new ones

bool ldap_mod_replace(
    LDAP\Connection $ldap,
    string $dn,
    array $entry,
    arraynull $controls = null
)

Replaces one or more attributes from the specified dn. It may also add or remove attributes.

ldap: An LDAP\Connection instance, returned by ldap_connect.
dn: The distinguished name of an LDAP entity.
entry: An associative array listing the attributes to replace. Sending an empty array as value will remove the attribute, while sending an attribute not existing yet on this entry will add it.
controls: Array of LDAP Controls to send with the request.

Returns true on success or false on failure.

Version	Description
8.1.0	The `ldap` parameter expects an LDAP\Connection instance now; previously, a valid `ldap link` resource was expected.
8.0.0	`controls` is nullable now; previously, it defaulted to `[]`.
7.3.0	Support for `controls` added

Note: This function is binary-safe.

ldap_mod_replace