Php/docs/function.ingres-field-type
ingres_field_type
(PHP 4 >= 4.0.2, PHP 5 < 5.1.0, PECL ingres >= 1.0.0)
ingres_field_type — Get the type of a field in a query result
说明
ingres_field_type
( resource $result
, int $index
) : string|false
Get the type of a field in a query result.
Note:
Related Configurations
参数
result
The query result identifier
index
index
is the field whose type will be retrieved.The possible values of
index
depend upon the value of ingres.array_index_start. If ingres.array_index_start is1
(the default) thenindex
must be between1
and the value returned by ingres_num_fields(). If ingres.array_index_start is0
thenindex
must be between0
and ingres_num_fields()- 1
.
返回值
ingres_field_type() returns the type of a
field in a query result 或者在失败时返回 false
. Examples of
types returned are IIAPI_BYTE_TYPE
,
IIAPI_CHA_TYPE
, IIAPI_DTE_TYPE
,
IIAPI_FLT_TYPE
, IIAPI_INT_TYPE
,
IIAPI_VCH_TYPE
. Some of these types can map to more
than one SQL type depending on the length of the field (see
ingres_field_length()). For example
IIAPI_FLT_TYPE can be a float4 or a float8. For detailed
information, see the Ingres OpenAPI User Guide
, Appendix
"Data Types" in the Ingres documentation.
参见
- ingres_query() - Send an SQL query to Ingres
- ingres_fetch_array() - Fetch a row of result into an array
- ingres_fetch_assoc() - Fetch a row of result into an associative array
- ingres_fetch_object() - Fetch a row of result into an object
- ingres_fetch_row() - Fetch a row of result into an enumerated array