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Full Discussion: deleting lines by number
Top Forums UNIX for Dummies Questions & Answers deleting lines by number Post 47540 by cary530 on Thursday 12th of February 2004 08:56:48 AM
Old 02-12-2004
deleting lines by number

Is it possible to delete lines by their number? Also, I'd like to delete the last 3 rows of a file too. So from the front and back. Thanks.
 

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INGRES_NUM_ROWS(3)							 1							INGRES_NUM_ROWS(3)

ingres_num_rows - Get the number of rows affected or returned by a query

SYNOPSIS
int ingres_num_rows (resource $result) DESCRIPTION
This function primarily is meant to get the number of rows modified in the database. However, it can be used to retrieve the number of rows to fetch for a SELECT statement. Note If scrollable cursors are disabled and this function is called before using ingres_fetch_array(3), ingres_fetch_object(3), or ingres_fetch_row(3), the server will delete the result's data and the script will be unable to get them. Instead, you should retrieve the result's data using one of these fetch functions in a loop until it returns FALSE, indicating that no more results are available. PARAMETERS
o $result - The result identifier for a query RETURN VALUES
For delete, insert, or update queries, ingres_num_rows(3) returns the number of rows affected by the query. For other queries, ingres_num_rows(3) returns the number of rows in the query's result. SEE ALSO
ingres_query(3), ingres_fetch_array(3), ingres_fetch_assoc(3), ingres_fetch_object(3), ingres_fetch_row(3). PHP Documentation Group INGRES_NUM_ROWS(3)
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