QuickHashIntSet::loadFromFile
(PECL quickhash >= Unknown)
QuickHashIntSet::loadFromFile — This factory method creates a set from a file
説明
$filename, int $size = ?, int $options = ?): QuickHashIntSetThis 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
4to4194304. 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
User Contributed Notes
