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pg_result_seek

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

pg_result_seekSet internal row offset in result instance

Descrição

pg_result_seek(PgSql\Result $result, int $row): bool

pg_result_seek() sets the internal row offset in the result instance.

Parâmetros

result

Uma instância de PgSql\Result, retornada por pg_query(), pg_query_params() ou pg_execute() (entre outras).

row

Row to move the internal offset to in the PgSql\Result instance. Rows are numbered starting from zero.

Valor Retornado

Retorna true em caso de sucesso ou false em caso de falha.

Registro de Alterações

Versão Descrição
8.1.0 O parâmetro result agora espera uma instância de PgSql\Result; anteriormente, um resource era esperado.

Exemplos

Exemplo #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);

?>

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andrew-php dot net at andrew dot net dot au
19 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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