how to md5 hash

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PHP Development Security Issues

PHP gives developers a great deal of flexibility, but this also poses a potential risk to security issues, the recent need to summarize the past problems, here to lend a translation of an article at the same time with their own development of some

PHP String Functions

function Description Addcslashes () Returns a string that adds a backslash before the specified character. Addslashes () Returns a string that adds a backslash before a predefined character.

Java.security Generating MD5

PackageCom.tylor.util;ImportJava.math.BigInteger;Importjava.security.MessageDigest;Importjava.security.NoSuchAlgorithmException;/** * @authorTylor * August 23, 2017*/ Public classMd5util { Public Staticstring getMD5 (String str) {Try {

Summary of PHP development security issues

PHP gives developers a great deal of flexibility, but this also poses a potential risk to security issues, the recent need to summarize the past problems, here to lend a translation of an article at the same time with their own development of some

Python generates a unique ID using the UUID library

Original link: http://www.cnblogs.com/dkblog/archive/2011/10/10/2205200.htmlInformation:Python official doc: "20.15. Uuid-uuid objects according to RFC 4122" UUID Algorithm Introduction: "A universally Unique IDentifier (UUID) URN

PHP String Functions

  With a simple understanding of the PHP data type in the previous article, we know the string type, this article will introduce the string functions commonly used in PHP.The string is a sequence of characters, such as "Hello world!".PHP String

Where to use Memcache

using memcache in PHPprocess-oriented usageObject-oriented usage This is an object-oriented approach $mem = new Memcache; This class has no construction method$mem->connect ("localhost", 11211); Connection server, persistent connection is

Python generates a unique ID using the UUID library

Information:Python official doc: "20.15. Uuid-uuid objects according to RFC 4122" UUID Algorithm Introduction: "A universally Unique IDentifier (UUID) URN Namespace"Overview:UUIDis a 128-bit globally unique identifier, typically represented by a 3

Python module--hashlib and base64

Digest Algorithm (HASHLIB)Python's hashlib provides a common digest algorithm, such as MD5,SHA1 and so on.What is a digest algorithm? Abstract the algorithm is also called hash algorithm and hashing algorithm. It converts any length of data into a

The principle of common hash algorithm

Hash table, which is based on the high-speed access point of view design, but also a typical " space-time " approach. As the name implies, the data structure can be understood as a linear table, but the elements are not tightly arranged, but there

Python Standard library--uuid (Generate unique ID)

1. BasicA UUID is a globally unique identifier of 128 bits, typically represented by a 32-byte string (hexadecimal).It guarantees the uniqueness of time and space, also known as a GUID, all called: uuid--universally Unique IDentifier Python

String string processing function in PHP full version

Article Source: PHP Development Learning PortalAddress: http://www.phpthinking.com/archives/602Development habits commonly used string processing function grooming:STRTR () converts a specific character in a string.SUBSTR () returns part of a string.

Summary of general security issues in PHP development

Article Source: PHP Development Learning Portal PHP gives developers a great deal of flexibility, but this also poses a potential risk to security issues, the recent need to summarize the past problems, here to lend a translation of an article at

Python generates a unique ID using the UUID library

Information:Official Python doc: "20.15." Uuid-uuid objects according to RFC 4122UUID Algorithm Introduction: "A universally Unique IDentifier (UUID) URN Namespace"Overview:A UUID is a globally unique identifier of 128 bits, typically represented by

A tutorial on using Python to implement a simple similar image search _python

About five years ago, I was doing development work for a dating site. They are early startups, but they are also starting to have some stable user capacity. Unlike other dating sites, the company has traditionally been a major market image of

10 Super Useful PHP code clips decisive collection _php tips

This small series will give you 10 of the most useful PHP code snippets. 1. Find the distance between longitudes and latitudes function Getdistancebetweenpointsnew ($latitude 1, $longitude 1, $latitude 2, $longitude 2) {$theta = $longitude 1-

Analysis of the difference between char and varchar in MYSQL database and suggestions for its use _mysql

In a database, character-type data is the most, and can account for more than 80% of the entire database. It is very important to improve the performance of database to deal with character data correctly. In character data, the most used is char and

Python Standard library--uuid (Generate unique ID) __python

Sometimes we post bar in Baidu, in a website, save some pictures on the page, the picture name is sometimes a string of very long numbers and letters, but without exception, the image will not appear duplicate. This unique ID, generally obtained by

The difference between char and varchar

Today specifically searched the database of the string definition of the difference, write good, special excerpt as follows: In the database, the character type of data is the most, can account for more than 80% of the entire database. It is very

Universal Unique ID--uuid (Python)

First, overview: The abbreviation for the UUID (universally unique Identity) is a software-constructed standard, typically represented by a 32-byte 16 binary number (128-bit), which guarantees the uniqueness of time and space. Currently the most

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