QuickHashIntHash::__construct
(PECL quickhash >= Unknown)
QuickHashIntHash::__construct — Creates a new QuickHashIntHash object
Description
$size
, int $options
= ?)This constructor creates a new QuickHashIntHash. 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.
Parameters
-
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
64
to4194304
. -
options
-
The options that you can pass in are:
QuickHashIntHash::CHECK_FOR_DUPES
, which makes sure no duplicate entries are added to the hash;QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC
to not use PHP's internal memory manager as well as one ofQuickHashIntHash::HASHER_NO_HASH
,QuickHashIntHash::HASHER_JENKINS1
orQuickHashIntHash::HASHER_JENKINS2
. These last three configure which hashing algorithm to use. All options can be combined using bitmasks.
Return Values
Returns a new QuickHashIntHash object.
Examples
Example #1 QuickHashIntHash::__construct() example
<?php
var_dump( new QuickHashIntHash( 1024 ) );
var_dump( new QuickHashIntHash( 1024, QuickHashIntHash::CHECK_FOR_DUPES ) );
var_dump(
new QuickHashIntHash(
1024,
QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC | QuickHashIntHash::HASHER_JENKINS2
)
);
?>