ldap_mod_replace

(PHP 4, PHP 5)

ldap_mod_replaceReplace attribute values with new ones

Description

bool ldap_mod_replace ( resource $link_identifier , string $dn , array $entry )

Replaces one or more attributes from the specified dn. It performs the modification at the attribute level as opposed to the object level. Object-level modifications are done by the ldap_modify() function.

Parameters

link_identifier

An LDAP link identifier, returned by ldap_connect().

dn

The distinguished name of an LDAP entity.

entry

Return Values

Returns TRUE on success or FALSE on failure.

Notes

Note: This function is binary-safe.

See Also

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User Contributed Notes 13 notes

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1
dynamik
1 year ago
Using this function to 'replace' an Active Directory password requires the "Reset Password" security permission as opposed to the "Change Password" permission (which is assigned by default to SELF)
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mike dot rosile at interzonegames dot com
7 years ago
Here is some great information from the OpenLDAP FAQs regarding changing a userPassword attribute with PHP:

http://www.openldap.org/faq/data/cache/347.html

$userpassword = "{SHA}" . base64_encode( pack( "H*", sha1( $pass ) ) );
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0
Anonymous
2 years ago
this can not be used to change a password on an AD server that requires you to send the old and new password.

in order to do this use on shuts an sever make an admin-account that allows to change other ppl pw without suppling the old password first.
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0
plex909
6 years ago
Here's an easy way to encode AD "unicodepwd" values from linux...

Download and install recode...
http://www.gnu.org/software/recode/recode.html

Then write something like this...
<?php
function ADUnicodePwdValue($plain_txt_value)
{
    return
str_replace("\n", "", shell_exec("echo -n '\"" . $plain_txt_value . "\"' | recode latin1..utf-16le/base64"));
}

$user["unicodepwd"] = ADUnicodePwdValue("my_password");

?>

[EDITOR thiago NOTE: The following text was sent by boyvanderlaak at gmail dot com as an important complement]

if you do not have access to your linux box but have Multibyte String enabled you could try the following for AD 2008:

<?php
$info
["unicodePwd"] = mb_convert_encoding('"' . $newPassword . '"', 'utf-16le');
?>
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0
chris at mr2madness dot com
7 years ago
You can use arrays for multiple attributes example:

<?php
$entry
[mail] = array("example@example.com","example2@example.com");
$results = ldap_mod_add($ldapConnID,$dn, $entry);
?>
or as i did for creating anew user:
<?php
$adduserAD
["objectClass"] = array("top","person","organizationalPerson","user");
?>
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0
aaronfulton at softhome dot net
8 years ago
Before you modify values in your ldap directory, first make sure that you have permission to do so.  In openldap adding the following acl in slap.conf will allow the user to modify their own userpassword.

access to attr=userPassword
        by self write
        by anonymous auth
        by * none
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erwann at zeflip dot com
8 years ago
If you do not wish to set up SSL on your active directory, and you are running on Windows, you can use COM and ADSI to set the new password for a user, or to active a user:

<?PHP
// to set a user password
  // server is the ldap server
  // newuser_dn is the full dn of the user you want to modify
  // newuser_password is the password you wish to set for the user

   
$ADSI = new COM("LDAP:");
   
$user = $ADSI->OpenDSObject("LDAP://".$server."/".$newuser_dn, $adminuser, $adminpassword, 1);
   
$user->SetPassword($newuser_password);
   
$user->SetInfo();

// to activate a user
   
$ADSI = new COM("LDAP:");
   
$user = $ADSI->OpenDSObject("LDAP://".$server."/".$newuser_dn, $adminuser, $adminpassword, 1);
   
$user->AccountDisabled = false;
   
$user->SetInfo();

?>
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Anonymous
12 years ago
Sometime,we cannot replace ldap_mod_replace  function  with ldap_mod_del function and ldap_mod_add fuction .We  don't have permission to delete an attribute but  we can replace it.
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ondrej at sury dot cz
12 years ago
in openldap 2.0.x you can use method with mod_del/mod_add only if the attribute have defined EQUALITY rule.
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JoshuaStarr at aelana dot com
13 years ago
To modify an attribute with a single value:
  $entry[mail] = "newmail@aelana.com";
  $results = ldap_mod_add($ldapConnID,$dn, $entry);

To modify an attribute with multiple values:
  $entry[mail][] = "newmail@aelana.com";
  $entry[mail][] = "altnewmail@aelana.com";
  $results = ldap_mod_add($ldapConnID,$dn, $entry);

To modify multiple attributes
  $entry[mail][] = "newmail@aelana.com";
  $entry[mail][] = "altnewmail@aelana.com";
  $entry[c]      = "US";
  $results = ldap_mod_add($ldapConnID,$dn, $entry);
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oyvindmo at initio dot no
14 years ago
ldap_mod_replace() and ldap_modify() are _exactly_ the same.  So, the comment that ldap_mod_replace() "performs the modification at the attribute level as opposed to the object level", has no root in reality.
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yife at myrice-ltd dot com
14 years ago
if i want to replace the special attribute but i don't replace other attribute ,i just use "ldap_mod_del" and "ldap_mod_add" ,the function seems to that
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-1
frederic dot jacquot at insa-lyon dot fr
10 years ago
Changing a user password in Active Directory.
Securely connect (using ldaps) to the Active Directory and bind using an administrator account.

In this example, $userDn contains the dn of the user I want to modify, and $ad is the Active Directory ldaps connection)

$newPassword = "MyPassword";
$newPassword = "\"" . $newPassword . "\"";
$len = strlen($newPassword);
for ($i = 0; $i < $len; $i++)
        $newPassw .= "{$newPassword{$i}}\000";
$newPassword = $newPassw;
$userdata["unicodepwd"] = $newPassword;
$result = ldap_mod_replace($ad, $userDn, $userdata);
if ($result) echo "User modified!" ;
else echo "There was a problem!";

I found it hard to get a proper encoding for the unicodepwd attribute so this piece of code might help you ;-)
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