Foros del web, para los que viven de bits

	public function connect ($userDn=null, $userPwd=null) {
		if (is_resource($this->_ds)) {
			ldap_unbind($this->_ds);
		}
		if ($userDn===null) { 
			$userDn=$this->_ldapBindDn;
			$userPwd=$this->_ldapBindPass;
		}
		$result=false;
		$this->_ds=ldap_connect($this->_ldapServer);
		if ($this->_ds) {
			$result=ldap_bind($this->_ds, $userDn, $userPwd);
		}
		return $result;
	}

	public function getUserDn ($username) {
		if (!is_resource($this->_ds)) $this->connect();
		$result=null;
		$filter=str_replace('%u', $username, $this->_userFilter);
		$sr=ldap_search ($this->_ds, $this->_userBaseDn, $filter, array('dn'));
		$info=ldap_get_entries($this->_ds, $sr);
		if ($info['count']==1) {
			$result=$info[0]['dn'];
		} else {			
			$result=null;
		}
	
		return $result;
	}

"ou=Personas,dc=example,dc=com

GroupBaseDn="ou=Profesores,ou=Personas,dc=example,dc=com
y de 
GroupBaseDn="ou=Estudiantes,ou=Personas,dc=example,dc=com

ProfBaseDn="ou=Profesores,ou=Personas,dc=example,dc=com"
ProfFilter="(&(memberUid=%u)(objectClass=posixGroup))" ProfNameAttribute="uid"

public function isProfessor($userDN){
      $search = ldap_search($this->_ds,$this->_profBaseDn,"uid=".$userDN."");
      $enID = ldap_first_entry($this->_ds,$search);
      if($enID)
             return true;
      else 
             return false;
         }