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Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение было подгружено во время выполнения.

The following constants can be passed to ibase_trans() to specify transaction behaviour.

Firebird/InterBase transaction flags
Constant Description
IBASE_DEFAULT The default transaction settings are to be used. This default is determined by the client library, which defines it as IBASE_WRITE|IBASE_CONCURRENCY|IBASE_WAIT in most cases.
IBASE_READStarts a read-only transaction.
IBASE_WRITEStarts a read-write transaction.
IBASE_CONSISTENCYStarts a transaction with the isolation level set to 'consistency', which means the transaction cannot read from tables that are being modified by other concurrent transactions.
IBASE_CONCURRENCYStarts a transaction with the isolation level set to 'concurrency' (or 'snapshot'), which means the transaction has access to all tables, but cannot see changes that were committed by other transactions after the transaction was started.
IBASE_COMMITTEDStarts a transaction with the isolation level set to 'read committed'. This flag should be combined with either IBASE_REC_VERSION or IBASE_REC_NO_VERSION. This isolation level allows access to changes that were committed after the transaction was started. If IBASE_REC_NO_VERSION was specified, only the latest version of a row can be read. If IBASE_REC_VERSION was specified, a row can even be read when a modification to it is pending in a concurrent transaction.
IBASE_WAITIndicated that a transaction should wait and retry when a conflict occurs.
IBASE_NOWAITIndicated that a transaction should fail immediately when a conflict occurs.

The following constants can be passed to ibase_fetch_row(), ibase_fetch_assoc() or ibase_fetch_object() to specify fetch behaviour.

Firebird/InterBase fetch flags
Constant Description
IBASE_FETCH_BLOBSAlso available as IBASE_TEXTfor backward compatibility. Causes BLOB contents to be fetched inline, instead of being fetched as BLOB identifiers.
IBASE_FETCH_ARRAYSCauses arrays to be fetched inline. Otherwise, array identifiers are returned. Array identifiers can only be used as arguments to INSERT operations, as no functions to handle array identifiers are currently available.
IBASE_UNIXTIMECauses date and time fields not to be returned as strings, but as UNIX timestamps (the number of seconds since the epoch, which is 1-Jan-1970 0:00 UTC). Might be problematic if used with dates before 1970 on some systems.

The following constants are used to pass requests and options to the service API functions (ibase_server_info(), ibase_db_info(), ibase_backup(), ibase_restore() and ibase_maintain_db()). Please refer to the Firebird/InterBase manuals for the meaning of these options.

IBASE_BKP_IGNORE_CHECKSUMS -

IBASE_BKP_IGNORE_LIMBO -

IBASE_BKP_METADATA_ONLY -

IBASE_BKP_NO_GARBAGE_COLLECT -

IBASE_BKP_OLD_DESCRIPTIONS -

IBASE_BKP_NON_TRANSPORTABLE -

IBASE_BKP_CONVERT - Options to ibase_backup()

IBASE_RES_DEACTIVATE_IDX -

IBASE_RES_NO_SHADOW -

IBASE_RES_NO_VALIDITY -

IBASE_RES_ONE_AT_A_TIME -

IBASE_RES_REPLACE -

IBASE_RES_CREATE -

IBASE_RES_USE_ALL_SPACE - Options to ibase_restore()

IBASE_PRP_PAGE_BUFFERS -

IBASE_PRP_SWEEP_INTERVAL -

IBASE_PRP_SHUTDOWN_DB -

IBASE_PRP_DENY_NEW_TRANSACTIONS -

IBASE_PRP_DENY_NEW_ATTACHMENTS -

IBASE_PRP_RESERVE_SPACE -

IBASE_PRP_RES_USE_FULL -

IBASE_PRP_RES -

IBASE_PRP_WRITE_MODE -

IBASE_PRP_WM_ASYNC -

IBASE_PRP_WM_SYNC -

IBASE_PRP_ACCESS_MODE -

IBASE_PRP_AM_READONLY -

IBASE_PRP_AM_READWRITE -

IBASE_PRP_SET_SQL_DIALECT -

IBASE_PRP_ACTIVATE -

IBASE_PRP_DB_ONLINE -

IBASE_RPR_CHECK_DB -

IBASE_RPR_IGNORE_CHECKSUM -

IBASE_RPR_KILL_SHADOWS -

IBASE_RPR_MEND_DB -

IBASE_RPR_VALIDATE_DB -

IBASE_RPR_FULL -

IBASE_RPR_SWEEP_DB - Options to ibase_maintain_db()

IBASE_STS_DATA_PAGES -

IBASE_STS_DB_LOG -

IBASE_STS_HDR_PAGES -

IBASE_STS_IDX_PAGES -

IBASE_STS_SYS_RELATIONS - Options to ibase_db_info()

IBASE_SVC_SERVER_VERSION -

IBASE_SVC_IMPLEMENTATION -

IBASE_SVC_GET_ENV -

IBASE_SVC_GET_ENV_LOCK -

IBASE_SVC_GET_ENV_MSG -

IBASE_SVC_USER_DBPATH -

IBASE_SVC_SVR_DB_INFO -

IBASE_SVC_GET_USERS - Options to ibase_server_info()




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