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    The SplMaxHeap class

    (PHP 5 >= 5.3.0, PHP 7)

    Introducere

    The SplMaxHeap class provides the main functionalities of a heap, keeping the maximum on the top.

    Sinopsisul clasei

    SplMaxHeap extends SplHeap implements Iterator , Countable {
    /* Metode */
    protected compare ( mixed $value1 , mixed $value2 ) : int
    /* Metode moștenite */
    abstract protected SplHeap::compare ( mixed $value1 , mixed $value2 ) : int
    public SplHeap::count ( ) : int
    public SplHeap::current ( ) : mixed
    public SplHeap::extract ( ) : mixed
    public SplHeap::insert ( mixed $value ) : void
    public SplHeap::isCorrupted ( ) : bool
    public SplHeap::isEmpty ( ) : bool
    public SplHeap::key ( ) : mixed
    public SplHeap::next ( ) : void
    public SplHeap::recoverFromCorruption ( ) : void
    public SplHeap::rewind ( ) : void
    public SplHeap::top ( ) : mixed
    public SplHeap::valid ( ) : bool
    }

    Cuprins

    • SplMaxHeap::compare — Compare elements in order to place them correctly in the heap while sifting up
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    User Contributed Notes 1 note

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    MuLoT [ojousset49 at yahoo dot fr]
    13 years ago
    SplMaxHeap simple example with integer values...

    <?php
    class MySimpleHeap extends SplHeap
    {
        public function  compare( $value1, $value2 ) {
            return ( $value1 - $value2 );
        }
    }

    $obj = new MySimpleHeap();
    $obj->insert( 4 );
    $obj->insert( 8 );
    $obj->insert( 1 );
    $obj->insert( 0 );

    foreach( $obj as $number ) {
        echo $number.\"\\n\";
    }

    /*
        Output display :
        8
        4
        1
        0
    */
    ?>
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