pg_fetch_array

    (PHP 4, PHP 5, PHP 7, PHP 8)

    pg_fetch_array — Fetch a row as an array

    Descrição

    pg_fetch_array(PgSql\Result$result, ?int$row = null, int$mode = PGSQL_BOTH): array|false

    pg_fetch_array() returns an array that corresponds to the fetched row (record).

    pg_fetch_array() is an extended version of pg_fetch_row(). In addition to storing the data in the numeric indices (field number) to the result array, it can also store the data using associative indices (field name). It stores both indices by default.

    Nota: Esta função define campos NULL como o valor null do PHP.

    pg_fetch_array() is NOT significantly slower than using pg_fetch_row(), and is significantly easier to use.

    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 or null, the next row is fetched.

    mode

    Um parâmetro opcional que controla como o array retornado será indexado. mode é uma constante e pode assumir os seguintes valores: PGSQL_ASSOC, PGSQL_NUM e PGSQL_BOTH. Usando PGSQL_NUM, a função retornará um array com índices numéricos, usando PGSQL_ASSOC ela retornará apenas índices associativos enquanto PGSQL_BOTH retornará índices numéricos e associativos.

    Valor Retornado

    An array indexed numerically (beginning with 0) or associatively (indexed by field name), or both. Each value in the array is represented as a string. Database NULL values are returned as null.

    false is returned if row exceeds the number of rows in the set, there are no more rows, or on any other error. Fetching from the result of a query other than SELECT will also return false.

    Registro de Alterações

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

    Exemplos

    Exemplo #1 pg_fetch_array() example

    <?php

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

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

    $arr = pg_fetch_array($result, 0, PGSQL_NUM);
    echo     $arr[0] . " <- Row 1 Author\n";
    echo     $arr[1] . " <- Row 1 E-mail\n";

    // The row parameter is optional; NULL can be passed instead,
    // to pass a result_type. Successive calls to pg_fetch_array
    // will return the next row.
    $arr = pg_fetch_array($result, NULL, PGSQL_ASSOC);
    echo     $arr["author"] . " <- Row 2 Author\n";
    echo     $arr["email"] . " <- Row 2 E-mail\n";

    $arr = pg_fetch_array($result);
    echo     $arr["author"] . " <- Row 3 Author\n";
    echo     $arr[1] . " <- Row 3 E-mail\n";

    ?>

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