pg_fetch_object

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

    pg_fetch_object — Fetch a row as an object

    Descrição

    pg_fetch_object(
        PgSql\Result$result,
        ?int$row = null,
        string$class = "stdClass",
        array$constructor_args = []
    ): object|false

    pg_fetch_object() returns an object with properties that correspond to the fetched row's field names. It can optionally instantiate an object of a specific class, and pass parameters to that class's constructor.

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

    Speed-wise, the function is identical to pg_fetch_array(), and almost as fast as pg_fetch_row() (the difference is insignificant).

    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.

    class

    The name of the class to instantiate, set the properties of and return. If not specified, a stdClass object is returned.

    constructor_args

    An optional array of parameters to pass to the constructor for class objects.

    Valor Retornado

    An object with one attribute for each field name in the result. 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.

    Erros/Exceções

    A ValueError is thrown when the constructor_args is non-empty with the class not having constructor.

    Registro de Alterações

    VersãoDescrição
    8.3.0 Now throws a ValueError exception when the constructor_args is non-empty with the class not having constructor; previously an Exception was thrown.
    8.1.0 O parâmetro result agora espera uma instância de PgSql\Result; anteriormente, um resource era esperado.

    Exemplos

    Exemplo #1 pg_fetch_object() example

    <?php

    $database     = "store";

    $db_conn = pg_connect("host=localhost port=5432 dbname=$database");
    if (!    $db_conn) {
    echo     "Failed connecting to postgres database $database\n";
    exit;
    }

    $qu = pg_query($db_conn, "SELECT * FROM books ORDER BY author");


    while (    $data = pg_fetch_object($qu)) {
    echo     $data->author . " (";
    echo     $data->year . "): ";
    echo     $data->title . "<br />";
    }

    pg_free_result($qu);
    pg_close($db_conn);

    ?>

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