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pg_cancel_query

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_cancel_query Cancel an asynchronous query

Descrição

pg_cancel_query(PgSql\Connection $connection): bool

pg_cancel_query() cancels an asynchronous query sent with pg_send_query(), pg_send_query_params() or pg_send_execute(). You cannot cancel a query executed using pg_query().

Parâmetros

connection

Uma instância de PgSql\Connection.

Valor Retornado

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

Registro de Alterações

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

Exemplos

Exemplo #1 pg_cancel_query() example

<?php
$dbconn
= pg_connect("dbname=publisher") or die("Could not connect");

if (!
pg_connection_busy($dbconn)) {
pg_send_query($dbconn, "select * from authors; select count(*) from authors;");
}

$res1 = pg_get_result($dbconn);
echo
"First call to pg_get_result(): $res1\n";
$rows1 = pg_num_rows($res1);
echo
"$res1 has $rows1 records\n\n";

// Cancel the currently running query. Will be the second query if it is
// still running.
pg_cancel_query($dbconn);
?>

O exemplo acima produzirá:

First call to pg_get_result(): Resource id #3
Resource id #3 has 3 records

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