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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)
Alias dereferencing rule - Never.
LDAP_DEREF_SEARCHING (integer)
Alias dereferencing rule - Searching.
LDAP_DEREF_FINDING (integer)
Alias dereferencing rule - Finding.
LDAP_DEREF_ALWAYS (integer)
Alias dereferencing rule - Always.
LDAP_OPT_DEREF (integer)
Specifies alternative rules for following aliases at the server.
LDAP_OPT_SIZELIMIT (integer)

Specifies the maximum number of entries that can be returned on a search operation.

Note: The actual size limit for operations is also bounded by the server's configured maximum number of return entries. The lesser of these two settings is the actual size limit.

LDAP_OPT_TIMELIMIT (integer)
Specifies the number of seconds to wait for search results.

Note: The actual time limit for operations is also bounded by the server's configured maximum time. The lesser of these two settings is the actual time limit.

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)
Specifies the LDAP protocol to be used (V2 or V3).
LDAP_OPT_ERROR_NUMBER (integer)
Latest session error number.
LDAP_OPT_REFERRALS (integer)
Specifies whether to automatically follow referrals returned by the LDAP server.
LDAP_OPT_RESTART (integer)
Determines whether or not the connection should be implicitly restarted.
LDAP_OPT_HOST_NAME (integer)
Sets/gets a space-separated of hosts when trying to connect.
LDAP_OPT_ERROR_STRING (integer)
Alias of LDAP_OPT_DIAGNOSTIC_MESSAGE.
LDAP_OPT_DIAGNOSTIC_MESSAGE (integer)
Gets the latest session error message.
LDAP_OPT_MATCHED_DN (integer)
Sets/gets the matched DN associated with the connection.
LDAP_OPT_SERVER_CONTROLS (integer)
Specifies a default list of server controls to be sent with each request.
LDAP_OPT_CLIENT_CONTROLS (integer)
Specifies a default list of client controls to be processed with each request.
LDAP_OPT_DEBUG_LEVEL (integer)
Specifies a bitwise level for debug traces.
LDAP_OPT_X_KEEPALIVE_IDLE (integer)
Specifies the number of seconds a connection needs to remain idle before TCP starts sending keepalive probes.
LDAP_OPT_X_KEEPALIVE_PROBES (integer)
Specifies the maximum number of keepalive probes TCP should send before dropping the connection.
LDAP_OPT_X_KEEPALIVE_INTERVAL (integer)
Specifies the interval in seconds between individual keepalive probes.
LDAP_OPT_X_TLS_CACERTDIR (string)
Specifies the path of the directory containing CA certificates.
LDAP_OPT_X_TLS_CACERTFILE (string)
Specifies the full-path of the CA certificate file.
LDAP_OPT_X_TLS_CERTFILE (string)
Specifies the full-path of the certificate file.
LDAP_OPT_X_TLS_CIPHER_SUITE (string)
Specifies the allowed cipher suite.
LDAP_OPT_X_TLS_CRLCHECK (integer)
Specifies the CRL evaluation strategy. This must be one of: LDAP_OPT_X_TLS_CRL_NONE,LDAP_OPT_X_TLS_CRL_PEER, LDAP_OPT_X_TLS_CRL_ALL.

Note: This option is only valid for OpenSSL.

LDAP_OPT_X_TLS_CRLFILE (string)
Specifies the full-path of the CRL file.

Note: This option is only valid for GnuTLS.

LDAP_OPT_X_TLS_DHFILE (string)
Specifies the full-path of the file containing the parameters for Diffie-Hellman ephemeral key exchange.

Note: This option is ignored by GnuTLS and Mozilla NSS.

LDAP_OPT_X_TLS_KEYFILE (string)
Specifies the full-path of the certificate key file.
LDAP_OPT_X_TLS_PROTOCOL_MIN (integer)
Specifies the minimum protocol version. This can be one of: LDAP_OPT_X_TLS_PROTOCOL_SSL2,LDAP_OPT_X_TLS_PROTOCOL_SSL3, LDAP_OPT_X_TLS_PROTOCOL_TLS1_0, LDAP_OPT_X_TLS_PROTOCOL_TLS1_1, LDAP_OPT_X_TLS_PROTOCOL_TLS1_2
LDAP_OPT_X_TLS_RANDOM_FILE (string)
Sets/gets the random file when one of the system default ones are not available.
LDAP_OPT_X_TLS_REQUIRE_CERT (integer)
Specifies the certificate checking checking strategy. This must be one of: LDAP_OPT_X_TLS_NEVER,LDAP_OPT_X_TLS_HARD, LDAP_OPT_X_TLS_DEMAND, LDAP_OPT_X_TLS_ALLOW, LDAP_OPT_X_TLS_TRY. (Available as of PHP 7.0.0)
GSLC_SSL_NO_AUTH (integer)
SSL Authentication Mode - No authentication required. (Only for Oracle LDAP)
GSLC_SSL_ONEWAY_AUTH (integer)
SSL Authentication Mode - Only server authentication required. (Only for Oracle LDAP)
GSLC_SSL_TWOWAY_AUTH (integer)
SSL Authentication Mode - Both server and client authentication required. (Only for Oracle LDAP)
LDAP_EXOP_START_TLS (string)
Extended Operation constant - Start TLS (RFC 4511).
LDAP_EXOP_MODIFY_PASSWD (string)
Extended Operation constant - Modify password (RFC 3062).
LDAP_EXOP_REFRESH (string)
Extended Operation Constant - Refresh (RFC 2589).
LDAP_EXOP_WHO_AM_I (string)
Extended Operation Constant - WHOAMI (RFC 4532).
LDAP_EXOP_TURN (string)
Extended Operation Constant - Turn (RFC 4531).
LDAP_CONTROL_MANAGEDSAIT (string)
Control Constant - Manage DSA IT (RFC 3296).
LDAP_CONTROL_PROXY_AUTHZ (string)
Control Constant - Proxied Authorization (RFC 4370).
LDAP_CONTROL_SUBENTRIES (string)
Control Constant - Subentries (RFC 3672).
LDAP_CONTROL_VALUESRETURNFILTER (string)
Control Constant - Filter returned values (RFC 3876).
LDAP_CONTROL_ASSERT (string)
Control Constant - Assertion (RFC 4528).
LDAP_CONTROL_PRE_READ (string)
Control Constant - Pre read (RFC 4527).
LDAP_CONTROL_POST_READ (string)
Control Constant - Post read (RFC 4527).
LDAP_CONTROL_SORTREQUEST (string)
Control Constant - Sort request (RFC 2891).
LDAP_CONTROL_SORTRESPONSE (string)
Control Constant - Sort response (RFC 2891).
LDAP_CONTROL_PAGEDRESULTS (string)
Control Constant - Paged results (RFC 2696).
LDAP_CONTROL_AUTHZID_REQUEST (string)
Control Constant - Authorization Identity Request (RFC 3829).
LDAP_CONTROL_AUTHZID_RESPONSE (string)
Control Constant - Authorization Identity Response (RFC 3829).
LDAP_CONTROL_SYNC (string)
Control Constant - Content Synchronization Operation (RFC 4533).
LDAP_CONTROL_SYNC_STATE (string)
Control Constant - Content Synchronization Operation State (RFC 4533).
LDAP_CONTROL_SYNC_DONE (string)
Control Constant - Content Synchronization Operation Done (RFC 4533).
LDAP_CONTROL_DONTUSECOPY (string)
Control Constant - Don't Use Copy (RFC 6171).
LDAP_CONTROL_PASSWORDPOLICYREQUEST (string)
Control Constant - Password Policy Request
LDAP_CONTROL_PASSWORDPOLICYRESPONSE (string)
Control Constant - Password Policy Response
LDAP_CONTROL_X_INCREMENTAL_VALUES (string)
Control Constant - Active Directory Incremental Values
LDAP_CONTROL_X_DOMAIN_SCOPE (string)
Control Constant - Active Directory Domain Scope
LDAP_CONTROL_X_PERMISSIVE_MODIFY (string)
Control Constant - Active Directory Permissive Modify
LDAP_CONTROL_X_SEARCH_OPTIONS (string)
Control Constant - Active Directory Search Options
LDAP_CONTROL_X_TREE_DELETE (string)
Control Constant - Active Directory Tree Delete
LDAP_CONTROL_X_EXTENDED_DN (string)
Control Constant - Active Directory Extended DN
LDAP_CONTROL_VLVREQUEST (string)
Control Constant - Virtual List View Request
LDAP_CONTROL_VLVRESPONSE (string)
Control Constant - Virtual List View Response
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