php hash file

Transfer from http://www.smatrix.org/bbs/simple/index.php?t5591.html//////////////////////////////////////////////////////////////////////////////Directory1. PHP hash function and its application2. Symmetric cipher algorithm in PHP and its

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 =

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 kernel research: HASH tables and variables. In PHP, all data, regardless of variables, constants, classes, and attributes, are implemented using the Hash table. First, let's talk about the HASH table typedefstructbucket {ulongh; *

Php uses common hash encryption functions and phphash encryption. Php common hash encryption functions, phphphash encryption examples in this article describes common php hash Encryption functions. Share it with you for your reference. The specific

This article mainly introduces php's file hash calculation method, which involves file hash calculation techniques and is of great practical value, for more information about how php performs file hash operations, see the example in this article.

This article mainly introduces php's file hash calculation method, which involves file hash calculation techniques and is of great practical value, for more information about how php performs file hash operations, see the example in this article.

Php performs file hash operations This code is very useful. if you download a file and the website provides the hash result, you can perform a hash operation on the downloaded file to verify that the downloaded file is correct.

Hash table is a very efficient data structure, the hash table in PHP is a very important data structure, not only for representing arrays, associative arrays, object properties, function tables, symbol tables, It is also used inside the Zend virtual

PHP commonly used hash encryption function, Phphash encryption In this paper, we describe the commonly used hash encryption function in PHP. Share to everyone for your reference. The specific analysis is as follows: Copy the Code code as follows: