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    QuickHashIntSet::loadFromFile

    (PECL quickhash >= Unknown)

    QuickHashIntSet::loadFromFile — This factory method creates a set from a file

    説明

    public static QuickHashIntSet::loadFromFile(string $filename, int $size = ?, int $options = ?): QuickHashIntSet

    This factory method creates a new set from a definition file on disk. The file format consists of 32 bit signed integers packed together in the Endianness that the system that the code runs on uses.

    パラメータ

    filename
    The filename of the file to read the set from.
    size
    The amount of bucket lists to configure. The number you pass in will be automatically rounded up to the next power of two. It is also automatically limited from 4 to 4194304.
    options
    The same options that the class' constructor takes; except that the size option is ignored. It is automatically calculated to be the same as the number of entries in the set, rounded up to the nearest power of two with a maximum limit of 4194304.

    戻り値

    Returns a new QuickHashIntSet.

    例

    例1 QuickHashIntSet::loadFromFile() example

    <?php
    $file     = dirname( __FILE__ ) . "/simple.set";
    $set = QuickHashIntSet::loadFromFile(
    $file,
    QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC
    );
    foreach(     range( 0, 0x0f ) as $key )
    {
    printf( "Key %3d (%2x) is %s\n",
    $key, $key,
    $set->exists( $key ) ? 'set' : 'unset'
    );
    }
    ?>

    上の例の出力は、 たとえば以下のようになります。

    Key   0 ( 0) is unset
Key   1 ( 1) is set
Key   2 ( 2) is set
Key   3 ( 3) is set
Key   4 ( 4) is unset
Key   5 ( 5) is set
Key   6 ( 6) is unset
Key   7 ( 7) is set
Key   8 ( 8) is unset
Key   9 ( 9) is unset
Key  10 ( a) is unset
Key  11 ( b) is set
Key  12 ( c) is unset
Key  13 ( d) is set
Key  14 ( e) is unset
Key  15 ( f) is unset

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