预定义常量

下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

OCI8 Function and Method Modes
Constant Description
OCI_ASSOC Used with oci_fetch_all() and oci_fetch_array() to get results as an associative array.
OCI_BOTH Used with oci_fetch_all() and oci_fetch_array() to get results as an array with both associative and number indices.
OCI_COMMIT_ON_SUCCESS Statement execution mode for oci_execute() call. Automatically commit changes when the statement has succeeded.
OCI_CRED_EXT Used with oci_connect() for using Oracles' External or OS authentication.
OCI_DEFAULT See OCI_NO_AUTO_COMMIT.
OCI_DESCRIBE_ONLY Statement execution mode for oci_execute(). Use this mode if you want meta data such as the column names but don't want to fetch rows from the query.
OCI_EXACT_FETCH Obsolete. Statement fetch mode. Used when the application knows in advance exactly how many rows it will be fetching. This mode turns prefetching off for Oracle release 8 or later mode. The cursor is canceled after the desired rows are fetched which may result in reduced server-side resource usage.
OCI_FETCHSTATEMENT_BY_COLUMN Default mode of oci_fetch_all().
OCI_FETCHSTATEMENT_BY_ROW Alternative mode of oci_fetch_all().
OCI_LOB_BUFFER_FREE Used with OCILob::flush to free buffers used.
OCI_NO_AUTO_COMMIT Statement execution mode for oci_execute(). The transaction is not automatically committed when using this mode. For readability in new code, use this value instead of the older, equivalent OCI_DEFAULT constant.
OCI_NUM Used with oci_fetch_all() and oci_fetch_array() to get results as an enumerated array.
OCI_RETURN_LOBS Used with oci_fetch_array() to get the data value of the LOB instead of the descriptor.
OCI_RETURN_NULLS Used with oci_fetch_array() to get empty array elements if the row items value is null.
OCI_SEEK_CUR Used with OCILob::seek to set the seek position.
OCI_SEEK_END Used with OCILob::seek to set the seek position.
OCI_SEEK_SET Used with OCILob::seek to set the seek position.
OCI_SYSDATE Obsolete.
OCI_SYSDBA Used with oci_connect() to connect with the SYSDBA privilege. The php.ini setting oci8.privileged_connect should be enabled to use this.
OCI_SYSOPER Used with oci_connect() to connect with the SYSOPER privilege. The php.ini setting oci8.privileged_connect should be enabled to use this.
OCI_TEMP_BLOB Used with OCILob::writeTemporary to indicate that a temporary BLOB should be created.
OCI_TEMP_CLOB Used with OCILob::writeTemporary to indicate that a temporary CLOB should be created.
OCI8 Bind and Define Types
Constant Description
OCI_B_BFILE Used with oci_bind_by_name() when binding BFILEs.
OCI_B_BIN Used with oci_bind_by_name() to bind RAW values.
OCI_B_BLOB Used with oci_bind_by_name() when binding BLOBs.
OCI_B_BOL Used with oci_bind_by_name() to bind a PL/SQL BOOLEAN variable.
OCI_B_CFILEE Used with oci_bind_by_name() when binding CFILEs.
OCI_B_CLOB Used with oci_bind_by_name() when binding CLOBs.
OCI_B_CURSOR Used with oci_bind_by_name() when binding cursors, previously allocated with oci_new_descriptor().
OCI_B_INT Used with oci_bind_array_by_name() to bind arrays of INTEGER.
OCI_B_NTY Used with oci_bind_by_name() when binding named data types.
OCI_B_NUM Used with oci_bind_array_by_name() to bind arrays of NUMBER.
OCI_B_ROWID Used with oci_bind_by_name() when binding ROWIDs.
SQLT_AFC Used with oci_bind_array_by_name() to bind arrays of CHAR.
SQLT_AVC Used with oci_bind_array_by_name() to bind arrays of VARCHAR2.
SQLT_BDOUBLE Not supported.
SQLT_BFILEE The same as OCI_B_BFILE.
SQLT_BFLOAT Not supported.
SQLT_BIN The same as OCI_B_BIN.
SQLT_BLOB The same as OCI_B_BLOB.
SQLT_BOL The same as OCI_B_BOL.
SQLT_CFILEE The same as OCI_B_CFILEE.
SQLT_CHR Used with oci_bind_array_by_name() to bind arrays of VARCHAR2. Also used with oci_bind_by_name().
SQLT_CLOB The same as OCI_B_CLOB.
SQLT_FLT Used with oci_bind_array_by_name() to bind arrays of FLOAT.
SQLT_INT The same as OCI_B_INT.
SQLT_LBI Used with oci_bind_by_name() to bind LONG RAW values.
SQLT_LNG Used with oci_bind_by_name() to bind LONG values.
SQLT_LVC Used with oci_bind_array_by_name() to bind arrays of LONG VARCHAR.
SQLT_NTY The same as OCI_B_NTY.
SQLT_NUM The same as OCI_B_NUM.
SQLT_ODT Used with oci_bind_array_by_name() to bind arrays of LONG.
SQLT_RDD The same as OCI_B_ROWID.
SQLT_RSET The same as OCI_B_CURSOR.
SQLT_STR Used with oci_bind_array_by_name() to bind arrays of STRING.
SQLT_UIN Not supported.
SQLT_VCS Used with oci_bind_array_by_name() to bind arrays of VARCHAR.
OCI8 Descriptor Types
Constant Description
OCI_DTYPE_FILE This flag tells oci_new_descriptor() to initialize a new FILE descriptor.
OCI_DTYPE_LOB This flag tells oci_new_descriptor() to initialize a new LOB descriptor.
OCI_DTYPE_ROWID This flag tells oci_new_descriptor() to initialize a new ROWID descriptor.
OCI_D_FILE The same as OCI_DTYPE_FILE.
OCI_D_LOB The same as OCI_DTYPE_LOB.
OCI_D_ROWID The same as OCI_DTYPE_ROWID.
OCI8 Transparent Application Failover (TAF) Constants
常量 描述
OCI_FO_ABORT (int) Failover was unsuccessful and there is no option of retrying.
OCI_FO_BEGIN (int) Failover has detected a lost connection and failover is starting.
OCI_FO_END (int) Failover completed successfully.
OCI_FO_ERROR (int) Failover was unsuccessful but it gives the application the opportunity to handle the error and return OCI_FO_RETRY to retry failover.
OCI_FO_NONE (int) The user has not requested a failover type.
OCI_FO_REAUTH (int) An Oracle user has been re-authenticated.
OCI_FO_RETRY (int) The failover should be attempted again by Oracle. In case of an error while failing over to a new connection, TAF is able to retry the failover. Typically, the application code should sleep for a while before returning OCI_FO_RETRY.
OCI_FO_SELECT (int) The user has requested SELECT failover as well. It allows users with open cursors to continue fetching from them after failure.
OCI_FO_SESSION (int) The user has requested only session failover. For example, if a user's connection is lost, then a new session is automatically created for the user on the backup. This type of failover does not attempt to recover SELECTs.
OCI_FO_TXNAL (int) The user has requested a transaction failover.
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