db2_field_width
(PECL ibm_db2 >= 1.0.0)
db2_field_width — Returns the width of the current value of the indicated column in a result set
說明
Returns the width of the current value of the indicated column in a result set. This is the maximum width of the column for a fixed-length data type, or the actual width of the column for a variable-length data type.
參數
-
stmt -
Specifies a statement resource containing a result set.
-
column -
Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the column, or a string containing the name of the column.
返回值
Returns an integer containing the width of the specified character or
binary data type column in a result set. If the specified column does not
exist in the result set, db2_field_width() returns
false.
參見
- db2_field_display_size() - Returns the maximum number of bytes required to display a column
- db2_field_name() - Returns the name of the column in the result set
- db2_field_num() - Returns the position of the named column in a result set
- db2_field_precision() - Returns the precision of the indicated column in a result set
- db2_field_scale() - Returns the scale of the indicated column in a result set
- db2_field_type() - Returns the data type of the indicated column in a result set