mysqli_result::$num_rows

mysqli_num_rows

Gets the number of rows in a result

Beschreibung

Objektorientierter Stil

int$mysqli_result->num_rows;

Prozeduraler Stil

int mysqli_num_rows ( mysqli_result $result )

Returns the number of rows in the result set.

The behaviour of mysqli_num_rows depends on whether buffered or unbuffered result sets are being used. For unbuffered result sets, mysqli_num_rows will not return the correct number of rows until all the rows in the result have been retrieved.

Parameter-Liste

result: Nur bei prozeduralem Aufruf: Ein von mysqli_query, mysqli_store_result oder mysqli_use_result zurückgegebenes Ergebnisobjekt.

Rückgabewerte

Returns number of rows in the result set.

Hinweis:
If the number of rows is greater than PHP_INT_MAX, the number will be returned as a string.

Beispiele

Beispiel #1 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();
}

if ($result = $mysqli->query("SELECT Code, Name FROM Country ORDER BY Name")) {

    /* determine number of rows result set */
    $row_cnt = $result->num_rows;

    printf("Result set has %d rows.\n", $row_cnt);

    /* close result set */
    $result->close();
}

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

Beispiel #2 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();
}

if ($result = mysqli_query($link, "SELECT Code, Name FROM Country ORDER BY Name")) {

    /* determine number of rows result set */
    $row_cnt = mysqli_num_rows($result);

    printf("Result set has %d rows.\n", $row_cnt);

    /* close result set */
    mysqli_free_result($result);
}

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

Die obigen Bespiele erzeugen folgende Ausgabe:

Result set has 239 rows.

Siehe auch

mysqli_affected_rows
mysqli_store_result
mysqli_use_result
mysqli_query