QuickHashIntStringHash::__construct
(PECL quickhash >= Unknown)
QuickHashIntStringHash::__construct — Creates a new QuickHashIntStringHash object
Beschreibung
$size, int $options = 0)This constructor creates a new QuickHashIntStringHash. The size is the amount of bucket lists to create. The more lists there are, the less collisions you will have. Options are also supported.
Parameter-Liste
-
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
64to4194304. -
options -
The options that you can pass in are:
QuickHashIntStringHash::CHECK_FOR_DUPES, which makes sure no duplicate entries are added to the hash;QuickHashIntStringHash::DO_NOT_USE_ZEND_ALLOCto not use PHP's internal memory manager as well as one ofQuickHashIntStringHash::HASHER_NO_HASH,QuickHashIntStringHash::HASHER_JENKINS1orQuickHashIntStringHash::HASHER_JENKINS2. These last three configure which hashing algorithm to use. All options can be combined using bitmasks.
Rückgabewerte
Returns a new QuickHashIntStringHash object.
Beispiele
Beispiel #1 QuickHashIntStringHash::__construct() example
<?php
var_dump( new QuickHashIntStringHash( 1024 ) );
var_dump( new QuickHashIntStringHash( 1024, QuickHashIntStringHash::CHECK_FOR_DUPES ) );
var_dump(
new QuickHashIntStringHash(
1024,
QuickHashIntStringHash::DO_NOT_USE_ZEND_ALLOC | QuickHashIntStringHash::HASHER_JENKINS2
)
);
?>
