ldap object class violation with ldap_add in php4.0.4pl1

I'm doing some R & D with PHP and OpenLDAP I managed to get the php function ldap_add to work and I've been using PHP to add form-submitted information to a directory. However I decided to include another objectclass (uidObject) and now it returns with: error - Object class violation error number - 65 I can use the ldapadd client and load an ldif file containing exactly the same info into the directory. Why won't it work from within PHP???? I've included an excerpt from my code, below. Thanks in advance for any help. Derek 12 $ds=ldap_connect("localhost"); 13 if ($ds) { 14 $r=ldap_bind($ds, "cn=admin,dc=bipcontracts,dc=com", "mypassword"); 15 16 $rdn = "o=$username,ou=suppliers,ou=customers,dc=bipcontracts,dc=com"; 17 $version = phpversion(); 18 echo "$version<br>"; 19 $info["userPassword"]="$password"; 20 $info["o"]="$organisation"; 21 $info["uid"]="$username"; 22 $info["objectclass"]="organization"; 23 $info["objectclass"]="uidObject"; 24 25 $add=ldap_add($ds,$rdn, $info); 26 $error = ldap_error($ds); 27 $errno = ldap_errno($ds); 28 echo "error is $error number $errno"; 29 30 ldap_close($ds);