( string dn, int with_attrib )
ldap_explode_dn() function is used to split
the DN returned by ldap_get_dn() and breaks
it up into its component parts. Each part is known as Relative
Distinguished Name, or RDN. ldap_explode_dn()
returns an array of all those components.
with_attrib is used to request if the RDNs
are returned with only values or their attributes as well. To
get RDNs with the attributes (i.e. in attribute=value format) set
with_attrib to 0 and to get only values
set it to 1.