Edit Report a Bug

    mysqli_stmt::send_long_data

    mysqli_stmt_send_long_data

    (PHP 5, PHP 7, PHP 8)

    mysqli_stmt::send_long_data -- mysqli_stmt_send_long_data — Envoie des données MySQL par paquets

    Description

    Style orienté objet

    public mysqli_stmt::send_long_data(int $param_num, string $data): bool

    Style procédural

    mysqli_stmt_send_long_data(mysqli_stmt $statement, int $param_num, string $data): bool

    Envoie les données au serveur par paquets, si la taille des données excède la limite de max_allowed_packet. Cette fonction peut être appelée plusieurs fois pour envoyer les données textes ou binaires de champs comme les BLOB ou TEXT.

    Liste de paramètres

    statement

    Style procédural uniquement : Un objet mysqli_stmt retourné par la fonction mysqli_stmt_init().

    param_num

    Indique quel paramètre doit être associé avec quelles données. Les paramètres sont numérotés à partir de 0.

    data

    Une chaîne de caractères contenant les données à envoyer.

    Valeurs de retour

    Cette fonction retourne true en cas de succès ou false si une erreur survient.

    Exemples

    Exemple #1 Style orienté objet

    <?php
    $stmt     = $mysqli->prepare("INSERT INTO messages (message) VALUES (?)");
    $null = NULL;
    $stmt->bind_param("b", $null);
    $fp = fopen("messages.txt", "r");
    while (!    feof($fp)) {
    $stmt->send_long_data(0, fread($fp, 8192));
    }
    fclose($fp);
    $stmt->execute();
    ?>

    Voir aussi

    add a note add a note

    User Contributed Notes 4 notes

    up
    4
    Gustavo Narea
    18 years ago
    Just in case:

    'max_allowed_packet' is a MySQL variable; it is not a PHP function/variable/constant.

    Further info: http://dev.mysql.com/doc/refman/4.1/en/packet-too-large.html

    HTH.
    up
    1
    ChrisH
    4 years ago
    If you are trying to write a single field which is above max_allowed_packet then this function will not help you (contrary to what the documentation example seems to show above).

    Parameters in MySQL are still restricted by max_allowed_packet on a per-field basis so you will get an error like:

    “mysqli_sql_exception: Parameter of prepared statement which is set through mysql_send_long_data() is longer than 'max_long_data_size' bytes”

    The only real use case for this function seems to be if you are writing multiple long fields which when combined would go over max_allowed_packet.
    up
    0
    DimeCadmium
    3 years ago
    To ChrisH's note, you must call this function multiple times with the same $param_nr, to send the first max_allowed_packet bytes, then the next, and so on. So you might need to do a for loop over changing substr() indexes, or etc.
    up
    -8
    lussnig at smcc dot de
    19 years ago
    send_long_data() these function is normaly used to store Data in Binary blob field. But if the table is UTF8 and connection charset it does not expect binary data (for example images) it take utf8 Data.
    This mean you have to do utf8_encode bevore sending binary data.
    add a note add a note
    To Top