mysql_data_seek moves the internal row pointer of the MySQL result associated with the specified result identifier to point to the specified row number. The next call to a MySQL fetch function, such as mysql_fetch_assoc, would return that row.
row_number starts at 0. The row_number should be a value in the range from 0 to mysql_num_rows - 1. However if the result set is empty (mysql_num_rows == 0), a seek to 0 will fail with an E_WARNING and mysql_data_seek will return false.
The result resource that is being evaluated. This result comes from a call to mysql_query.
The desired row number of the new result pointer.
Returns true on success or false on failure.
The function mysql_data_seek can be used in conjunction only with mysql_query, not with mysql_unbuffered_query.