odbc_num_fields()
(PHP 4, PHP 5, PHP 7)
Number of columns in a result
说明
odbc_num_fields(resource $result_id): int
Gets the number of fields(columns)in an ODBC result.
参数
- $result_id
The result identifier returned by odbc_exec().
返回值
Returns the number of fields, or -1 on error.