pg_fetch_result

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

    pg_fetch_result — Returns values from a result instance

    Descrição

    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().

    Parâmetros

    result

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

    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.

    Valor Retornado

    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.

    Registro de Alterações

    VersãoDescrição
    8.3.0row is now nullable.
    8.1.0 O parâmetro result agora espera uma instância de PgSql\Result; anteriormente, um resource era esperado.

    Exemplos

    Exemplo #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";
    ?>

    O exemplo acima produzirá:

    First field in the second row is: 2

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