QuickHashIntStringHash::__construct
(PECL quickhash >= Unknown)
QuickHashIntStringHash::__construct — Creates a new QuickHashIntStringHash object
Description
$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.
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 to 4194304.
-
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_ALLOC to not use PHP's internal memory manager as well as one of QuickHashIntStringHash::HASHER_NO_HASH, QuickHashIntStringHash::HASHER_JENKINS1 or QuickHashIntStringHash::HASHER_JENKINS2. These last three configure which hashing algorithm to use. All options can be combined using bitmasks.
Return Values
Returns a new QuickHashIntStringHash object.
Examples
Example #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
)
);
?>
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения, относящиеся к переменным и типам
- Quickhash
- Функция QuickHashIntStringHash::add() - This method adds a new entry to the hash
- Функция QuickHashIntStringHash::__construct() - Creates a new QuickHashIntStringHash object
- Функция QuickHashIntStringHash::delete() - This method deletes am entry from the hash
- Функция QuickHashIntStringHash::exists() - This method checks whether a key is part of the hash
- Функция QuickHashIntStringHash::get() - This method retrieves a value from the hash by its key
- Функция QuickHashIntStringHash::getSize() - Returns the number of elements in the hash
- Функция QuickHashIntStringHash::loadFromFile() - This factory method creates a hash from a file
- Функция QuickHashIntStringHash::loadFromString() - This factory method creates a hash from a string
- Функция QuickHashIntStringHash::saveToFile() - This method stores an in-memory hash to disk
- Функция QuickHashIntStringHash::saveToString() - This method returns a serialized version of the hash
- QuickHashIntStringHash::set
- Функция QuickHashIntStringHash::update() - This method updates an entry in the hash with a new value
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