QuickHashIntStringHash (class)

The QuickHashIntStringHash class

Introduction

(PECL quickhash >= Unknown)

This class wraps around a hash containing integer numbers, where the values are strings. Hashes are also available as implementation of the ArrayAccess interface.

Hashes 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

QuickHashIntStringHash {

/* Constants */

const integer CHECK_FOR_DUPES = 1 ;

const integer DO_NOT_USE_ZEND_ALLOC = 2 ;

const integer HASHER_NO_HASH = 256 ;

const integer HASHER_JENKINS1 = 512 ;

const integer HASHER_JENKINS2 = 1024 ;

/* Methods */

public bool add ( int $key , string $value )

public __construct ( int $size [, int $options = 0 ] )

public bool delete ( int $key )

public bool exists ( int $key )

public mixed get ( int $key )

public int getSize ( void )

public static QuickHashIntStringHash loadFromFile ( string $filename [, int $size = 0 [, int $options = 0 ]] )

public static QuickHashIntStringHash loadFromString ( string $contents [, int $size = 0 [, int $options = 0 ]] )

public void saveToFile ( string $filename )

public string saveToString ( void )

public int set ( int $key , string $value )

public bool update ( int $key , string $value )

}

Predefined Constants

QuickHashIntStringHash::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.

QuickHashIntStringHash::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.

QuickHashIntStringHash::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.

QuickHashIntStringHash::HASHER_JENKINS1

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

QuickHashIntStringHash::HASHER_JENKINS2

Selects a variant hashing algorithm.

QuickHashIntStringHash::add — This method adds a new entry to the hash

QuickHashIntStringHash::__construct — Creates a new QuickHashIntStringHash object

QuickHashIntStringHash::delete — This method deletes am entry from the hash

QuickHashIntStringHash::exists — This method checks whether a key is part of the hash

QuickHashIntStringHash::get — This method retrieves a value from the hash by its key

QuickHashIntStringHash::getSize — Returns the number of elements in the hash

QuickHashIntStringHash::loadFromFile — This factory method creates a hash from a file

QuickHashIntStringHash::loadFromString — This factory method creates a hash from a string

QuickHashIntStringHash::saveToFile — This method stores an in-memory hash to disk

QuickHashIntStringHash::saveToString — This method returns a serialized version of the hash

QuickHashIntStringHash::set — This method updates an entry in the hash with a new value, or adds a new one if the entry doesn't exist

QuickHashIntStringHash::update — This method updates an entry in the hash with a new value

← QuickHashStringIntHash::update

QuickHashIntStringHash::add →

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Licensed under the Creative Commons Attribution License v3.0 or later.

https://secure.php.net/manual/en/class.quickhashintstringhash.php

QuickHashIntStringHash (class)

The QuickHashIntStringHash class

Introduction

Class synopsis

Predefined Constants

Table of Contents