pg_result_seek

(PHP 4 >= 4.3.0, PHP 5)

pg_result_seek — Set internal row offset in result resource

Descripción

bool pg_result_seek ( resource $result , int $offset )

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

Parámetros

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.

Valores devueltos

Devuelve TRUE en caso de éxito o FALSE en caso de error.

Ejemplos

Ejemplo #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);
 
?>

Ver también

pg_fetch_row() - Get a row as an enumerated array
pg_fetch_assoc() - Fetch a row as an associative array
pg_fetch_array() - Fetch a row as an array
pg_fetch_object() - Fetch a row as an object
pg_fetch_result() - Returns values from a result resource

add a note User Contributed Notes pg_result_seek - [1 notes]

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andrew-php dot net at andrew dot net dot au ¶

8 years ago


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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