pg_fetch_all_columns

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

pg_fetch_all_columnsFetches all rows in a particular result column as an array

Descrizione

pg_fetch_all_columns(PgSql\Result $result, int $field = 0): array

pg_fetch_all_columns() returns an array that contains all rows (records) in a particular column of the PgSql\Result instance.

Nota: Questa funzione imposta i campio NULL al valore PHP null.

Elenco dei parametri

result

An PgSql\Result instance, returned by pg_query(), pg_query_params() or pg_execute()(among others).

field

Column number. Defaults to the first column if not specified.

Valori restituiti

An array with all values in the result column.

Log delle modifiche

Versione Descrizione
8.1.0 The result parameter expects an PgSql\Result instance now; previously, a resource was expected.

Esempi

Example #1 pg_fetch_all_columns() example

<?php
$conn
= pg_pconnect("dbname=publisher");
if (!
$conn) {
echo
"An error occurred.\n";
exit;
}

$result = pg_query($conn, "SELECT title, name, address FROM authors");
if (!
$result) {
echo
"An error occurred.\n";
exit;
}

// Get an array of all author names
$arr = pg_fetch_all_columns($result, 1);

var_dump($arr);

?>

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