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(PHP 4, PHP 5)
sybase_field_seek — Sets field offset
$result 
   ,  int $field_offset 
   )Seeks to the specified field offset. If the next call to sybase_fetch_field() won't include a field offset, this field would be returned.
result 
field_offset 
   成功时返回  TRUE , 或者在失败时返回  FALSE 。