Resource Types
Using the PHP LDAP calls
LDAP
PHP Manual

# Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

`LDAP_DEREF_NEVER` (integer)
`LDAP_DEREF_SEARCHING` (integer)
`LDAP_DEREF_FINDING` (integer)
`LDAP_DEREF_ALWAYS` (integer)
`LDAP_OPT_DEREF` (integer)
`LDAP_OPT_SIZELIMIT` (integer)
`LDAP_OPT_TIMELIMIT` (integer)
`LDAP_OPT_NETWORK_TIMEOUT` (integer)
  Option for ldap_set_option() to allow setting network timeout. (Available as of PHP 5.3.0)
`LDAP_OPT_PROTOCOL_VERSION` (integer)
`LDAP_OPT_ERROR_NUMBER` (integer)
`LDAP_OPT_REFERRALS` (integer)
`LDAP_OPT_RESTART` (integer)
`LDAP_OPT_HOST_NAME` (integer)
`LDAP_OPT_ERROR_STRING` (integer)
`LDAP_OPT_MATCHED_DN` (integer)
`LDAP_OPT_SERVER_CONTROLS` (integer)
`LDAP_OPT_CLIENT_CONTROLS` (integer)
`LDAP_OPT_DEBUG_LEVEL` (integer)
`GSLC_SSL_NO_AUTH` (integer)
`GSLC_SSL_ONEWAY_AUTH` (integer)
`GSLC_SSL_TWOWAY_AUTH` (integer)

Resource Types
Using the PHP LDAP calls
LDAP
PHP Manual