QuickHashIntStringHash::__construct

(PECL quickhash >= Unknown)

QuickHashIntStringHash::__construct — Creates a new QuickHashIntStringHash object

说明

public QuickHashIntStringHash::__construct ( int $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.

参数

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.

返回值

Returns a new QuickHashIntStringHash object.

范例

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 cairofontface creates a new cairofontface object php cairomatrix creates a new cairomatrix object php dateperiod creates a new dateperiod object php domattr creates a new domattr object php domcomment creates a new domcomment object php domdocument creates a new domdocument object php domelement creates a new domelement object php domentityreference creates a new domentityreference object php domimplementation creates a new domimplementation object php domprocessinginstruction creates a new domprocessinginstruction object php domtext creates a new domtext object php domxpath creates a new domxpath object php ffi creates a new ffi object php quickhashinthash creates a new quickhashinthash object php quickhashintset creates a new quickhashintset object php quickhashintstringhash creates a new quickhashintstringhash object php quickhashstringinthash creates a new quickhashstringinthash object php sam 函数 creates a new message object php swfmorph creates a new swfmorph object php xsltprocessor creates a new xsltprocessor object