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rcrow at NOSPAM dot laptv dot com ¶
21 years ago
If you are trying to access BINARY DATA, such as ObjectSID within LDAP, you must first get an individual entry, as stated under ldap_get_values() function -- "This call needs a result_entry_identifier, so needs to be preceded by one of the ldap search calls and one of the calls to get an individual entry."

The following code snippet will get the LDAP objectSID for a specific user.

<?php
/* Get the binary objectsid entry                                           */
/* Be sure that you have included the binary field in your ldap_search.    */
$criteria =  "samaccountname=$ldapUser";
$justthese = array("memberOf", "objectsid");
    
$ldapSearchResult = ldap_search($ldapConnectionResult, $ldapBase, $criteria, $justthese);
  
if (ldap_count_entries($ldapConnectionResult, $ldapSearchResult)){
     $ldapResults = ldap_get_entries($ldapConnectionResult, $ldapSearchResult);

   $entry = ldap_first_entry($ldapConnectionResult, $ldapSearchResult);
   $ldapBinary = ldap_get_values_len ($ldapConnectionResult, $entry, "objectsid");

/* your code here */
  
}
?>

You then can use something like bin2hex to put the data in a more usable form.
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