See also ldap_first_entry() and ldap_next_entry()
return_value["count"] = number of entries in the result return_value[0]: refers to the details of first entry return_value[i]["dn"] = DN of the ith entry in the result return_value[i]["count"] = number of attributes in ith entry return_value[i][j] = jth attribute in the ith entry in the result return_value[i]["attribute"]["count"] = number of values for attribute in ith entry return_value[i]["attribute"][j] = jth value of attribute in ith entry