Resetting a LDAP user's password in PHP, without the old password, using admin user -

i trying figure out how reset ldap user password when connected user (admin user) in php password reset feature.

$this->con = ldap_connect($this->server); ldap_set_option($this->con, ldap_opt_protocol_version, 3);  $user_search = ldap_search($this->con, $this->dn,"(|(uid=$user)(mail=$user))"); $this->user_get = ldap_get_entries($this->con, $user_search); $user_entry = ldap_first_entry($this->con, $user_search); $this->user_dn = ldap_get_dn($this->con, $user_entry); $this->user_id = $this->user_get[0]["uid"][0];  $entry = array(); $entry["userpassword"] = "$encoded_newpassword";     ldap_modify($this->con, $this->user_dn, $entry) 

(aggregated class methods) works resetting user's password using old password, how go doing password change user (admin in case)?

i think there ldap authentication/binding not understanding. perhaps can point me in right direction.

can ldap_bind before ldap_modify allow me use user_dn , update user admin user?

not clear on how works.

openldap implementation being used.

you can call ldap_bind dn/password of admin user establish connection (admin) user.

sample php manual

// using ldap bind $ldaprdn  = 'uname';     // ldap rdn or dn $ldappass = 'password';  // associated password  // connect ldap server $ldapconn = ldap_connect("ldap.example.com")     or die("could not connect ldap server.");  if ($ldapconn) {      // binding ldap server     $ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);      // verify binding     if ($ldapbind) {         echo "ldap bind successful...";     } else {         echo "ldap bind failed...";     }  }