types of codes

code. The characters in the image are relatively regular, some may be added with some random interferon, and some may be random character colors. The verification effect is better than the previous one. People who do not have the knowledge of basic graphics and Images cannot break through!3. Random Numbers in various image formats + random uppercase English letters + random interference pixels + random positions.4. Chinese characters are currently the latest verification

HTTP status CodeWhen a viewer accesses a webpage, the browser of the viewer makes a request to the server where the page is located. When a Web page is received and displayed by the browser, the server on which the page resides returns a message header (server header) that contains the HTTP status code to respond to the browser's request.The HTTP status code is in EnglishHTTP Status CodeThe following are the common HTTP status codes: 200-Succ

The role of the status code is to describe the return request result when the client sends a request to the server side. With the status code, the user can know whether the server has handled the request properly, or what error has occurred.RFC2616 defines the status code, consisting of 3 digits and reason SMS.The first digit in the number specifies the response category, and the latter two bits are not categorized. The following 5 types of response a

HTTP status Code 200 and 304 HTTP status code are three-bit numeric codes that represent the response status of a Web server. By using these numbers, you can simplify the expression of the state. There are dozens of status codes, of which the first number is 1-5. According to these 5 numbers, the status code can be divided into 5 classes.1 indicates that the request is being processed, 2 the opening request

Each ecommerce site now has one or more types of discount/discount/coupon systems to share with you how to generate a unique promotion/discount code in PHP. The main is to implement a discount code system, can be used to track users from certain sources, such as some host sales when the link to other pages will have preferential code generation, as well as more promotional code. Therefore, today we will discuss the implementation of such a discount co

Matlab codes and datasets for Feature Learning dimensionality reduction (subspace Learning)/Feature selection/topic mo Deling/matrix factorization/sparse coding/hashing/clustering/active Learning We provide here some matlab codes o F feature learning algorithms, as as and some datasets in MATLAB format. All this codes and data sets are used in our experiments. Th

.Locality-sensitive Hashing Scheme Based on p-stable distributions [paper]Mayur Datar, Nicole Immorlica, Piotr Indyk, Vahab S. Mirrokni. [SCG], 2004.near-optimal Hashing algorithms for approximate nnearest Neighbor in high Dimensions. [Paper]Alexandr Andoni and Piotr Indyk. [Communications of the ACM], 2008.kernelized locality-sensitive Hashing for Scalable Image Search [paper]Brian Kulis and Kristen Grauman. [ICCV], 2009.Fast similarity Search for learned Metrics [paper]Prateek Jain, Brian kuli

QR Code, also known as the CODE,QR Universal Quick Response, is a mobile device in recent years a hyper-popular encoding method, it can save more information than the traditional bar code barcode, but also can represent more data types: characters, numbers, Japanese, Chinese and so on. These two days to learn about the QR Code image generation related details, think this thing is a cryptographic algorithm, write an article here, expose. For studious p

Data Types supported by Mysql (Summary of column types) and mysql Data Types I. Numerical type Mysql supports all numeric types in standard SQL, including strict data types (INTEGER, SMALLINT, DECIMAL, NUMBERIC), and approximate numeric data

required) if the page cannot provide the requested range, the server returns this status code. NBSP;NBSP;NBSP;NBSP;417 (not meeting expectations) server does not meet the requirements for the "expected" Request header field. 5xx (server error) These status codes indicate that the server has an internal error while trying to process the request. These errors can be errors on the server itself, not the request. NBSP;NBSP;NBSP;NBSP;NBSP;500 (Server i

this request.405-The HTTP verb used to access this page is not allowed (method not allowed)406-The client browser does not accept the MIME type of the requested page.407-proxy authentication is required.412-Precondition failed.413– request entity is too large.414-The request URI is too long.415– media types not supported.The range requested by 416– is not sufficient.417– execution failed.423– a locked error.5XX-Server ErrorThe server could not comple

HTTP status CodeReference URL: http://www.cnblogs.com/52php/p/5658326.htmlWhen a viewer accesses a webpage, the browser of the viewer makes a request to the server where the page is located. When a Web page is received and displayed by the browser, the server on which the page resides returns a message header (server header) that contains the HTTP status code to respond to the browser's request.The HTTP status code is in EnglishHTTP Status CodeThe following are the common HTTP status

Promotion and coupon codes in premium pricing in most companies, customer retention is an important criterion for success. Companies use a variety of strategies to retain customers. One of the most common words is a discount. In the market, customers are always looking for better products and price competition. In the world of retail companies, it is common to hear about coupon codes and promotional items o

. The RDN for the entry uses a forbidden attribute type. 65 Ldap_object_class_violation Indicates the add, modify, or modify DN operation violates the object class rules for the entry. For example, the following types's request return this error:The Add or modify operation tries to add an entry without a value for a required attribute. The Add or modify operation tries to add an entry with a value for a attribute which the class definition does not Contai N. The modify op

The HTTP status code represents the status of the response returned by the HTTP protocol. For example, the client sends a request to the server, and if the requested resource is successfully obtained, the returned status code is 200, indicating the corresponding success. If the requested resource does not exist, a 404 error is typically returned.HTTP status codes are usually divided into 5 types, which begi