(PHP 4, PHP 5, PHP 7)
msql_fetch_field — Get field information
$result
[, int $field_offset = 0
] ) : objectmsql_fetch_field() can be used in order to obtain information about fields in a certain query result.
resultresource 型的结果集。此结果集来自对 msql_query() 的调用。
field_offsetThe field offset. If not specified, the next field that wasn't yet retrieved by msql_fetch_field() is retrieved.
Returns an object containing field information. The properties of the object are:
name - column name
table - name of the table the column belongs to
not_null - 1 if the column cannot be NULL
unique - 1 if the column is a unique key