pg_fetch_result

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

    pg_fetch_result — Returns values from a result instance

    Descripción

    pg_fetch_result(PgSql\Result$result, string|false|null$row, mixed$field): string|false|null
    pg_fetch_result(PgSql\Result$result, mixed$field): string|false|null

    pg_fetch_result() returns the value of a particular row and field (column) in an PgSql\Result instance.

    Nota:

    This function used to be called pg_result().

    Parámetros

    result

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

    row

    Row number in result to fetch. Rows are numbered from 0 upwards. If omitted, next row is fetched.

    field

    A string representing the name of the field (column) to fetch, otherwise an int representing the field number to fetch. Fields are numbered from 0 upwards.

    Valores devueltos

    Boolean is returned as "t" or "f". All other types, including arrays are returned as strings formatted in the same default PostgreSQL manner that you would see in the psql program. Database NULL values are returned as null.

    false is returned if row exceeds the number of rows in the set, or on any other error.

    Historial de cambios

    VersiónDescripción
    8.3.0row is now nullable.
    8.1.0 The result parameter expects an PgSql\Result instance now; previously, a recurso was expected.

    Ejemplos

    Ejemplo #1 pg_fetch_result() example

    <?php
    $db     = pg_connect("dbname=users user=me") || die();

    $res = pg_query($db, "SELECT 1 UNION ALL SELECT 2");

    $val = pg_fetch_result($res, 1, 0);

    echo     "First field in the second row is: ", $val, "\n";
    ?>

    El resultado del ejemplo sería:

    First field in the second row is: 2

    Ver también

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