mysqli::multi_query

mysqli_multi_query

Performs a query on the database

Beschreibung

Objektorientierter Stil

bool mysqli::multi_query ( string $query )

Prozeduraler Stil

bool mysqli_multi_query ( mysqli $link , string $query )

Executes one or multiple queries which are concatenated by a semicolon.

To retrieve the resultset from the first query you can use mysqli_use_result or mysqli_store_result. All subsequent query results can be processed using mysqli_more_results and mysqli_next_result.

Parameter-Liste

link

Nur bei prozeduralem Aufruf: Ein von mysqli_connect oder mysqli_init zurückgegebenes Verbindungsobjekt.

query

The query, as a string.

Data inside the query should be properly escaped.

Rückgabewerte

Returns FALSE if the first statement failed. To retrieve subsequent errors from other statements you have to call mysqli_next_result first.

Beispiele

Beispiel #1 mysqli::multi_query example

Objektorientierter Stil


<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query  = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if ($mysqli->multi_query($query)) {
    do {
        /* store first result set */
        if ($result = $mysqli->store_result()) {
            while ($row = $result->fetch_row()) {
                printf("%s\n", $row[0]);
            }
            $result->free();
        }
        /* print divider */
        if ($mysqli->more_results()) {
            printf("-----------------\n");
        }
    } while ($mysqli->next_result());
}

/* close connection */
$mysqli->close();
?>

Prozeduraler Stil


<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query  = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if (mysqli_multi_query($link, $query)) {
    do {
        /* store first result set */
        if ($result = mysqli_store_result($link)) {
            while ($row = mysqli_fetch_row($result)) {
                printf("%s\n", $row[0]);
            }
            mysqli_free_result($result);
        }
        /* print divider */
        if (mysqli_more_results($link)) {
            printf("-----------------\n");
        }
    } while (mysqli_next_result($link));
}

/* close connection */
mysqli_close($link);
?>

Oben gezeigte Beispiele erzeugen eine ähnliche Ausgabe wie:

my_user@localhost
-----------------
Amersfoort
Maastricht
Dordrecht
Leiden
Haarlemmermeer

Siehe auch

mysqli_query
mysqli_use_result
mysqli_store_result
mysqli_next_result
mysqli_more_results