QuickHashIntSet::loadFromFile

(PECL quickhash >= Unknown)

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

Beschreibung

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.

Parameter-Liste

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.

Rückgabewerte

Returns a new QuickHashIntSet.

Beispiele

Beispiel #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'
    );
}
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

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