ldap_error
[ Editor's Note: The segfault has been fixed and will not occur in PHP 4.3.4 or PHP 5.0.0 when they are released. However, it is still important to escape special characters as detailed below. ]
If your DN contains < or > characters, you must escape them with a backslash or ldap_explode_dn() will give you a "wrong parameter count" error or even a segmentation fault.
For example, these calls will fail with a "wrong parameter count" or a seg fault:
ldap_explode_dn( "cn=<bob>,dc=example,dc=com", 0 );
ldap_explode_dn( 'cn=<bob>,dc=example,dc=com', 0 );
But this will succeed
ldap_explode_dn( "cn=\<bob\>,dc=example,dc=com", 0 );
Notice also that the < and > are escaped with hex codes as noted above. This function is a nice wrapper that properly formats all DNs and can safely be called with < and > characters, and UTF-8 characters:
function my_explode_dn( $dn, $with_attributes=0 )
{
$dn = addcslashes( $dn, "<>" );
$result = ldap_explode_dn( $dn, $with_attributes );
//translate hex code into ascii again
foreach( $result as $key => $value )
$result[$key] = preg_replace("/\\\([0-9A-Fa-f]{2})/e", "''.chr(hexdec('\\1')).''", $value);
return $result;
}
I am using php 4.3.1. Good luck!
ldap_explode_dn
(PHP 4, PHP 5)
ldap_explode_dn — Divide un DN en sus partes componentes
Descripción
array ldap_explode_dn
( string
$dn
, int $with_attrib
)Divide el DN devuelto por ldap_get_dn() y lo rompe en sus partes componentes. Cada parte es conocida como Nombre Relativo Distinguido, o RDN por sus siglas en inglés.
Parámetros
-
dn -
El nombre distinguido de una entidad de LDAP.
-
with_attrib -
Utilizado para petición si los RDNs son devueltos con valores únicos o con sus atributos. Para obtener RDNs con los atributos (por ejemplo, en el formato atributo=valor) establecer
with_attriben 0 y obtener solamente los valores establecidos en 1.
Valores devueltos
Devuelve un array de todos los componente de un DN. El primer elemento en este array tiene la clave count y representa el número de valores devueltos, los siguientes elementos son componentes DN numéricamente indexados.
add a note
User Contributed Notes
ldap_explode_dn
DavidSmith at byu dot net
15-Sep-2003 09:06
gabriel at hrz dot uni-marburg dot de
05-Aug-2003 02:27
Keep attention on UTF8 encoded DNs. Since openLDAP >=2.1.2
ldap_explode_dn turns unprintable chars (in the ASCII sense, UTF8
encoded) into \<hexcode>.
Example:
$dn="ou=Universität ,c=DE";
var_dump(ldap_explode_dn($dn,0));
//returns
array(3) {
["count"]=>
int(2)
[0]=>
string(19) "ou=Universit\C3\A4t"
[1]=>
string(4) "c=DE"
}
Unfortunately, PHP don't support the ldap functions ldap_str2dn and
ldap_dn2str, but by means of preg_replace a workaround is possible to
recover the old behaviour of ldap_explode_dn
// workaround
function myldap_explode_dn($dn,$with_attribute){
$result=ldap_explode_dn ($dn, $with_attrib);
//translate hex code into ascii again
foreach($result as $key=>$value){
$result[$key]=preg_replace("/\\\([0-9A-Fa-f]{2})/e", "''.chr(hexdec('\\1')).''", $value);
}
return($result);
}
//
//then follows for the example
$dn="ou=Universität ,c=DE";
var_dump(myldap_explode_dn($dn,0));
//returns
array(3) {
["count"]=>
int(2)
[0]=>
string(15) "ou=Universität"
[1]=>
string(4) "c=DE"
}
bs at muekno dot de
23-Oct-2001 04:02
Copying is much better than typing!!!!
Just modify the constants.
Best wishes (and thanX 4 this helpfull site),
Bernd Schwaegerl
Mueller-Knoche GmbH, Systemhaus fuer EDV-Loesungen
# Example:
$HOST = "Yourhostname";
$USER_DN = "Yourldapuser_dn";
$PWD = "Ldapuserpassword";
$BASE_DN = "o=Your_organisation";
$SEARCH_OBJECT="sn=YOUR_SEARCH_PERSON_OBJECTS_SN";
$ldap_handle=ldap_connect($HOST);
$bind_result=ldap_bind($ldap_handle,$USER_DN,$PWD);
$search_result=ldap_search($ldap_handle,$BASE_DN,$SEARCH_OBJECT);
$result=ldap_get_entries($ldap_handle,$search_result);
$result_array=ldap_get_entries($ldap_handle,$result);
$whole_dn=$result_array[0]["dn"];
$dn_parts=ldap_explode_dn($whole_dn,0);