PHP: Manual: mysql_data

(PHP3 , PHP4 )

mysql_data_seek -- Move internal result pointer

Description

int mysql_data_seek (int result_identifier, int row_number)

Returns: true on success, false on failure.

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 mysql_fetch_row() would return that row.

Row_number starts at 0.

Example 1. MySQL data seek example

  1 
  2 <?php
  3     $link = mysql_pconnect ("kron", "jutta", "geheim") {
  4         or die ("Could not connect");
  5     }
  6 
  7     mysql_select_db ("samp_db") {
  8         or die ("Could not select database");
  9     }
 10 
 11     $query = "SELECT last_name, first_name FROM friends";
 12     $result = mysql_query ($query) {
 13         or die ("Query failed");
 14     }
 15 
 16     # fetch rows in reverse order
 17 
 18     for ($i = mysql_num_rows ($result) - 1; $i >=0; $i--) {
 19         if (!mysql_data_seek ($result, $i)) {
 20             printf ("Cannot seek to row %d\n", $i);
 21             continue;
 22         }
 23 
 24         if(!($row = mysql_fetch_object ($result)))
 25             continue;
 26 
 27         printf ("%s %s<BR>\n", $row->last_name, $row->first_name);
 28     }
 29 
 30     mysql_free_result ($result);
 31 ?>
 32

mysql_create_db

mysql_db_query