php fastest hash

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PHP string hash function algorithm implementation code

function Djbhash ($STR)//0.22 { $hash = 0; $n = strlen ($STR); for ($i = 0; $i { $hash + = ($hash } return $hash% 701819; } function Elfhash ($STR)//0.35 { $hash = $x = 0; $n =

Classical hash algorithm for strings

1 overview The time efficiency of the list lookup is O (N), and the log2n,b+ tree is log2n by the binary method, but the time efficiency of searching the hash list is O (1). Design efficient algorithms often need to use the hash list, the constant

PHP associative array with hash table (hash table) not specified

PHP has a data type is very important, it is an associative array, also known as hash table (hash table), is a very useful data structure. in the program, we may encounter the need to eliminate the weight of the problem, to give the simplest

PHP Execution principle

php Execution Principle PHP is a very simple application, the development of a very high efficiency of a language, its weak type of variable can save the programmer a lot of time and effort to define variables, type conversion and so on. It is a

PHP running mechanism and principle (underlying), php running mechanism _ PHP Tutorial

PHP operating mechanism and principle (underlying), and php operating mechanism. The PHP operating mechanism and principle (underlying). when talking about the php operating mechanism, we should first introduce the php module. php has three modules

PHP bottom-level operating mechanism detailed

This article we mainly share with you the PHP bottom operating mechanism of the detailed, first we will share with you PHP design concept and features, PHP four layer system, etc., hope to help everyone. 1. PHP Design concept and Features

PHP operating mechanism and principle (underlying), PHP operating mechanism _php tutorial

PHP operating mechanism and principle (underlying), PHP operating mechanism When it comes to PHP's operating mechanism to introduce PHP modules, PHP has a total of three modules: the kernel, the Zend engine, and the extension layer, the PHP kernel

How does a md5-PHP hash a string into a 10-digit number?

Md5 is a string that is hash into a character + number, but now I need to hash a string into a 10-digit number. Is there any algorithm that can be implemented, or, you can convert the md5 result to a 10-digit md5. This method is hash into a

Underlying operating mechanism and principle of PHP

PHP is simple, but it is not easy to be proficient. In addition to using it, we also need to know its underlying Working principles. PHP is a dynamic language suitable for web development. Specifically, it is a software framework that uses C

The underlying operating mechanism and principle of PHP, and the underlying operating mechanism of php

The underlying operating mechanism and principle of PHP, and the underlying operating mechanism of php PHP is simple, but it is not easy to be proficient. In addition to using it, we also need to know its underlying Working principles. PHP is a

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