ldap_start_tls
Indeed, utf is the way to go as soon as you use non-english text, if you required portability. Don't forget to utf5_encode either.
The t61_8859 functions seem to be deprecated.
ldap_t61_to_8859
(PHP 4 >= 4.0.2, PHP 5)
ldap_t61_to_8859 — Translate t61 characters to 8859 characters
Description
string ldap_t61_to_8859
( string
$value
)Warning
This function is currently not documented; only its argument list is available.
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User Contributed Notes
ldap_t61_to_8859 - [1 notes]