Quickhash

Table of Contents

The QuickHashIntSet class

Introduction

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

QuickHashIntSet
class QuickHashIntSet {
/* Constants */
const integer QuickHashIntSet::CHECK_FOR_DUPES = 1 ;
const integer QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC = 2 ;
const integer QuickHashIntSet::HASHER_NO_HASH = 256 ;
const integer QuickHashIntSet::HASHER_JENKINS1 = 512 ;
const integer QuickHashIntSet::HASHER_JENKINS2 = 1024 ;
/* Methods */
public bool add ( int $key )
public __construct ( int $size [, int $options ] )
public bool delete ( int $key )
public bool exists ( int $key )
publicint getSize ( void )
public static QuickHashIntSet loadFromFile ( string $filename [, int $size [, int $options ]] )
public static QuickHashIntSet loadFromString ( string $contents [, int $size [, int $options ]] )
public void saveToFile ( string $filename )
public string saveToString ( void )
}

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.

The QuickHashIntHash class

Introduction

This class wraps around a hash containing integer numbers, where the values are also integer numbers. 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

QuickHashIntHash
class QuickHashIntHash {
/* Constants */
const integer QuickHashIntHash::CHECK_FOR_DUPES = 1 ;
const integer QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC = 2 ;
const integer QuickHashIntHash::HASHER_NO_HASH = 256 ;
const integer QuickHashIntHash::HASHER_JENKINS1 = 512 ;
const integer QuickHashIntHash::HASHER_JENKINS2 = 1024 ;
/* Methods */
public bool add ( int $key [, int $value ] )
public __construct ( int $size [, int $options ] )
public bool delete ( int $key )
public bool exists ( int $key )
public int get ( int $key )
public int getSize ( void )
public static QuickHashIntHash loadFromFile ( string $filename [, int $options ] )
public static QuickHashIntHash loadFromString ( string $contents [, int $options ] )
public void saveToFile ( string $filename )
public string saveToString ( void )
public bool set ( int $key , int $value )
public bool update ( int $key , int $value )
}

Predefined Constants

QuickHashIntHash::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.

QuickHashIntHash::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.

QuickHashIntHash::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.

QuickHashIntHash::HASHER_JENKINS1

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

QuickHashIntHash::HASHER_JENKINS2

Selects a variant hashing algorithm.

The QuickHashStringIntHash class

Introduction

This class wraps around a hash containing strings, where the values are integer numbers. 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

QuickHashStringIntHash
class QuickHashStringIntHash {
/* Constants */
const integer QuickHashStringIntHash::CHECK_FOR_DUPES = 1 ;
const integer QuickHashStringIntHash::DO_NOT_USE_ZEND_ALLOC = 2 ;
/* Methods */
public bool add ( string $key , int $value )
public __construct ( int $size [, int $options = 0 ] )
public bool delete ( string $key )
public bool exists ( string $key )
public mixed get ( string $key )
public int getSize ( void )
public static QuickHashStringIntHash loadFromFile ( string $filename [, int $size = 0 [, int $options = 0 ]] )
public static QuickHashStringIntHash loadFromString ( string $contents [, int $size = 0 [, int $options = 0 ]] )
public void saveToFile ( string $filename )
public string saveToString ( void )
public int set ( string $key , int $value )
public bool update ( string $key , int $value )
}

Predefined Constants

QuickHashStringIntHash::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.

QuickHashStringIntHash::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.

The QuickHashIntStringHash class

Introduction

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
class QuickHashIntStringHash {
/* Constants */
const integer QuickHashIntStringHash::CHECK_FOR_DUPES = 1 ;
const integer QuickHashIntStringHash::DO_NOT_USE_ZEND_ALLOC = 2 ;
const integer QuickHashIntStringHash::HASHER_NO_HASH = 256 ;
const integer QuickHashIntStringHash::HASHER_JENKINS1 = 512 ;
const integer QuickHashIntStringHash::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.