pg_free_result

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

    pg_free_result — Free result memory

    Descripción

    pg_free_result(PgSql\Result $result): bool

    pg_free_result() frees the memory and data associated with the specified PgSql\Result instance.

    This function need only be called if memory consumption during script execution is a problem. Otherwise, all result memory will be automatically freed when the script ends.

    Nota:

    This function used to be called pg_freeresult().

    Parámetros

    result

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

    Valores devueltos

    Devuelve true en caso de éxito o false en caso de error.

    Historial de cambios

    Versión Descripción
    8.1.0 The result parameter expects an PgSql\Result instance now; previously, a recurso was expected.

    Ejemplos

    Ejemplo #1 pg_free_result() example

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

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

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

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

    pg_free_result($res);
    ?>

    El resultado del ejemplo sería:

    First field in the second row is: 2

    Ver también

    • pg_query() - Ejecutar una consulta
    • pg_query_params() - Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text
    • pg_execute() - Envía una solicitud para ejecutar una setencia preparada con parámetros dados, y espera el resultado
    • pg_result_memory_size() - Returns the amount of memory allocated for a query result

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    User Contributed Notes 1 note

    up
    3
    Stefan W
    11 years ago
    You do NOT need to call pg_free_result() on every result resource you create.
    When result resources go out of scope, they are garbage collected just like everything else.
    Unless you're hoarding your results somewhere, you can basically ignore this function.

    Here's a little test you can run to confirm this: http://pastebin.com/ghw1PHuE
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