The QuickHashIntSet class

Introduction

(PECL quickhash >= Unknown)

This class wraps around a set containing integer numbers.

Sets can also be iterated over with foreach as the Iterator interface is implemented as well. The order of which elements are returned in is not guaranteed.

Class synopsis

public add ( int $key ) : bool

public __construct ( int $size [, int $options ] )

public delete ( int $key ) : bool

public exists ( int $key ) : bool

publicgetSize ( ) : int

public static loadFromFile ( string $filename [, int $size [, int $options ]] ) : QuickHashIntSet

public static loadFromString ( string $contents [, int $size [, int $options ]] ) : QuickHashIntSet

public saveToFile ( string $filename ) : void

public saveToString ( ) : string

Predefined Constants

QuickHashIntSet::CHECK_FOR_DUPES

If enabled, adding duplicate elements to a set (through either add() or loadFromFile()) will result in those elements to be dropped from the set. This will take up extra time, so only used when it is required.

QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC

Disables the use of PHP's internal memory manager for internal set structures. With this option enabled, internal allocations will not count towards the memory_limit settings.

QuickHashIntSet::HASHER_NO_HASH

Selects to not use a hashing function, but merely use a modulo to find the bucket list index. This is not faster than normal hashing, and gives more collisions.

QuickHashIntSet::HASHER_JENKINS1

This is the default hashing function to turn the integer hashes into bucket list indexes.

QuickHashIntSet::HASHER_JENKINS2

Selects a variant hashing algorithm.

Table of Contents

• QuickHashIntSet::add — This method adds a new entry to the set
• QuickHashIntSet::__construct — Creates a new QuickHashIntSet object
• QuickHashIntSet::delete — This method deletes an entry from the set
• QuickHashIntSet::exists — This method checks whether a key is part of the set
• QuickHashIntSet::getSize — Returns the number of elements in the set
• QuickHashIntSet::loadFromFile — This factory method creates a set from a file
• QuickHashIntSet::loadFromString — This factory method creates a set from a string
• QuickHashIntSet::saveToFile — This method stores an in-memory set to disk
• QuickHashIntSet::saveToString — This method returns a serialized version of the set