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As the chip price falls and the global market expands, NFC applications grow rapidly. The falling price of passive tags makes it popular to use NFC for inventory management, payment, and other applications. This article describes how NFC works, how

From: http://blog.csdn.net/longxin007/article/details/1880477 PrefaceIf common programming doesn't need to know these things, if you want to precisely control the format of your object file or you want to view the content in the object to make some

This article briefly introducesVideo Transcoding TechnologyOfDefinition, classification and implementation methods, focusing on how to use transcoding Technology in video engineering, including the use of transcoding technology and its advantages.

PHP Learning--php Encryption, PHP learning--php encryption There are several types of encryption in PHP: 1. MD5 Encryption String MD5 (string $str [, bool $raw _output = false]) Parameters STR--the original string. Raw_output--If the optional

1. MD5 EncryptionString MD5 (string $str [, bool $raw _output = False])ParametersStr--the Original String.Raw_output--if The optional raw_output is set to TRUE, then the MD5 Digest is returned in the original binary format of 16 bytes in Length.This

Common string processing functions used for development:Strtr () is a special character in the conversion string.Substr () returns part of the string.Strstr () first appearance of a string in another string (case sensitive)Str_replace () replaces

Global functionsencodeURI () decodeURI () encodeURIComponent () decodeuricomponent () Escape () unescape () eval ()String () Number () parseint () parsefloat ()IsNaN () isfinite () encodeURI (URI): encodes a string as a URI. Use the decodeURI (

decodeURI () Definition and usage: the decodeURI () function decodes a URI encoded by the encodeURI () function.Syntax: decodeURI (uristring)Parameter description: Uristring required, a string containing the URI group to decode or other text to

There are several types of encryption in PHP:1. MD5 Encryptionstring MD5 string $str $raw _output false ] )ParametersSTR--the original string.Raw_output--If the optional raw_output is set to TRUE, then the MD5 Digest is returned in the original

JSON (JavaScript Object Notation) is a lightweight data interchange format. It is based on a subset of ECMAScript.The JSON has these forms:An object is an unordered collection of "name/value pairs". An object starts with "{" (opening parenthesis)

HTTP and HTTPSHTTP protocol (Hypertext Transfer Protocol, Hypertext Transfer Protocol): is a way to publish and receive HTML pages.HTTPS (hypertext Transfer Protocol over secure Socket layer) is simply the secure version of HTTP, which is added to

Encode and decode methods for Python's Str,unicode objectsThe Str object in Python is actually "8-bit string", a byte string, essentially similar to byte[in Java).The Unicode object in Python should be the equivalent of a string object in Java, or

Transferred from: http://blog.sina.com.cn/s/blog_14d68bfac0102vux9.htmlNetwork monitoring tools are an important feature for businesses of any size. The objectives of network monitoring may vary widely. For example, the goal of monitoring activities

Network monitoring tools are an important feature for businesses of any size. The objectives of network monitoring may vary widely. For example, the goal of monitoring activities can be to ensure long-term network services, security protection,

MD5 () encryption algorithm Mode: One-way encryption Syntax: MD5 (string $str [, bool $raw _output = false]) $STR: Raw String $raw _output: If the optional raw_output is set to TRUE, MD5 Digest will return in its original binary format in

Netty Series (iv) TCP unpacking and gluing one, unpacking, and sticky pack issues(1) A small socket buffer problemIn a stream-based transmission, such as TCP/IP, the received data is stored in a socket receive buffer first. Unfortunately,

Java in Chinese characters garbled problem has been very annoying. Especially in Web applications. There are many analytic articles and solutions on the web, but they are always specific to certain situations. Many times encountered garbled problem,

Various encoding conversions for Java stringsFrom: http://www.blogjava.net/rabbit/archive/2008/03/27/189009.htmlImport java.io.UnsupportedEncodingException;/*** Encoding of converted Strings*/public class Changecharset {/** 7-bit ASCII character,

BASE64 encoding is a commonly used character encoding and is used in many places. The JDK provides easy-to-use Base64encoder and Base64decoder, which makes it easy to complete BASE64-based encoding and decoding. Here are the two small functions I

#-*-coding:-utf-8Import Urllib#url = ' http://iplaypython.com/'#url1 =urllib.urlopen (URL) # open URL address , Urlopen (URL, Data=none, Proxies=none)#print Url1.read () # reads read (), ReadLine (), ReadLines (), Fileno (), close () : These