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PHP 5 Kochbuch, Third Edition
book

PHP 5 Kochbuch, Third Edition

by David Sklar, Adam Trachtenberg, Carsten Lucke, Matthias Brusdeylins, Ulrich Speidel, Stephan Schmidt
September 2009
Intermediate to advanced
912 pages
48h 11m
German
O'Reilly Verlag
Content preview from PHP 5 Kochbuch, Third Edition

6.5 Funktionen mit einer variablen Anzahl von Argumenten verwenden

Problem

Sie möchten eine Funktion definieren, die eine variable Anzahl von Argumenten übernimmt.

Lösung

Übergeben Sie ein Array und platzieren Sie die variablen Argumente in das Array:

// Den "Durchschnitt" einer Reihe von Zahlen ermitteln.
function mean($numbers) {
    // Initialisieren, um Warnungen zu vermeiden.
    $sum = 0;

    // Die Anzahl der Elemente im Array.
    $size = count($numbers);

    // Das Array durchlaufen und die Zahlen addieren.
    for ($i = 0; $i < $size; $i++) {
        $sum += $numbers[$i];
    }

    // Durch die Anzahl der Zahlen dividieren.
    $average = $sum / $size;

    // Den Durchschnitt zurückgeben
    return $average;
}

$mean = mean(array(96, 93, 97));

Diskussion

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Publisher Resources

ISBN: 9783868993271Purchase book