ArrayIterator::uksort

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    ArrayIterator::uksort — Sort by keys using a user-defined comparison function

    Descrizione

    public ArrayIterator::uksort(callable $callback): true

    This method sorts the elements by keys using a user-supplied comparison function.

    Nota:

    If two members compare as equal, they retain their original order. Prior to PHP 8.0.0, their relative order in the sorted array was undefined.

    Elenco dei parametri

    callback

    La funzione di confronto deve restituire un intero minore, uguale o maggiore di zero se il primo argomento è considerato essere minore, uguale o maggiore del secondo.

    callback(mixed $a, mixed $b): int
    Attenzione

    Returning non-integer values from the comparison function, such as float, will result in an internal cast to int of the callback's return value. So values such as 0.99 and 0.1 will both be cast to an integer value of 0, which will compare such values as equal.

    Valori restituiti

    Always returns true.

    Log delle modifiche

    Versione Descrizione
    8.2.0 The return type is true now; previously, it was bool.

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