pg_result_seek

(PHP 4 >= 4.3.0, PHP 5)

pg_result_seek — Set internal row offset in result resource

Descrierea

bool pg_result_seek ( resource $result , int $offset )

pg_result_seek() sets the internal row offset in a result resource.

Parametri

result: PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
offset: Row to move the internal offset to in the result resource. Rows are numbered starting from zero.

Valorile întroarse

Întoarce valoarea TRUE în cazul succesului sau FALSE în cazul eşecului.

Exemple

Example #1 pg_result_seek() example


<?php

// Connect to the database
$conn = pg_pconnect("dbname=publisher");

// Execute a query
$result = pg_query($conn, "SELECT author, email FROM authors");

// Seek to the 3rd row (assuming there are 3 rows)
pg_result_seek($result, 2);

// Fetch the 3rd row
$row = pg_fetch_row($result);
 
?>

Vedeţi de asemenea

add a note User Contributed Notes
pg_result_seek

andrew-php dot net at andrew dot net dot au
18-Sep-2004 05:01


Ah, this is a handy feature for resetting the record index, for example, if you're used pg_fetch_{row,array,assoc} to iterate over the result set, and you want to do it again later on, without reexecuting your query. Something like:



<?php pg_result_seek($result, 0); ?>



will allow you to iterate over the result set all over again...

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pg_result_status

pg_result_error

Last updated: Fri, 01 Aug 2008