pg_select

    (PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

    pg_select — Seleziona delle tuple.

    Descrizione

    pg_select(
        resource $connessione,
        string $nome_tabella,
        array $array_assoc,
        int $opzioni = ?
    ): array

    pg_select() seleziona le tuple specificate da array_assoc che ha la forma campo=>valore. Se la query ha successo, restituisce un array contenente tutte le tuple e i campi che corrispondono alla condizione specificata da array_assoc. Se opzioni è specificato, pg_convert() viene applicata ad array_assoc con le opzioni date.

    Example #1 pg_select

    <?php
    $db     = pg_connect ('dbname=foo');
    // La riga seguente è sicura, dal momento che $_POST viene convertita automaticamente
    $rec = pg_select($db, 'post_log', $_POST);
    if (    $rec) {
    echo     "Record selezionati\n";
    var_dump($rec);
    }
    else {
    echo     "L'utente ha inviato dati errati\n";
    }
    ?>

    Nota:

    Questa funzione è sperimentale.

    Vedere anche pg_convert()

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    User Contributed Notes 2 notes

    up
    4
    david dot tulloh at infaze dot com dot au
    19 years ago
    Valid options are PGSQL_DML_NO_CONV, PGSQL_DML_EXEC, PGSQL_DMP_ASYNC, PGSQL_DML_STRING (pulled out of source code).

    This function does not support selecting from multiple tables. You can get around this by setting the PGSQL_DML_NO_CONV option. This prevents the error which occurs when the function tries to convert the condition array.

    I think it is also important to point out that the table_name field is not safe, particularily with the PGSQL_DML_NO_CONV option.

    The arguements array field is compulsory, as documented. What isn't so clear is that the array has to actually have some values in it, you can't do a select all.

    In summary, this function is good for a very small subset of basic queries. If you are after anything more complex you are better off with pg_query.
    up
    -5
    wietse at cj2 dot nl
    18 years ago
    David mentioned that you can't do a Select all.
    However, when executing this script:
    <?php
    $conn_string     = "dbname=mydb";
    $db = pg_connect($conn_string);
    $selectfields = array("imgid" => "");
    $records = pg_select($db,"mmsfiles",$selectfields);
    print_r($records);
    ?>
    ...I get this result:
    Array
    (
    [0] => Array
    (
    [imgid] => 1
    [file] => /home/wietse/public_html/mms/images/1.gif
    [thumb] =>
    )
    [1] => Array
    (
    [imgid] => 2
    [file] => /home/wietse/public_html/mms/images/2.gif
    [thumb] =>
    )
    [2] => Array
    (
    [imgid] => 3
    [file] => /home/wietse/public_html/mms/images/3.gif
    [thumb] =>
    )
    [3] => Array
    (
    [imgid] => 4
    [file] => /home/wietse/public_html/mms/images/4.gif
    [thumb] =>
    )
    )
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