GOOCODE - Find your code/scripts

0 The normal site to bring the kind of parameters may be very long, especially in the printing of paper products such as corporate brochures to be printed on a long url, then very ugly, and few people will go to remember this site, Although it is now possible to use a two-dimensional code to open a long URL. But people can use short URLs to achieve beautiful links, especially those with limited number of applications such as microblogging.

Short URL implementation principle is that there is a data table configuration file will be short URL and the actual URL corresponding, when a short URL request, the program jump to the corresponding actual URL up, in order to achieve the URL of the visit.

8 When the article content expertise, in order to facilitate reading and page display content we usually paged to display. The general page processing is published in the background when the article will be submitted to generate multiple pages after the static file. In this paper, we will use examples to explain the dynamic use of PHP long page content paging.

Manual paging: the general content in the edit when adding special paging tags, such as {pages}, submitted, the PHP program will process page breaks according to the page break, generate a different static pages. This sort of paging method is accurate, but need to manually add page breaks, a heavy workload.
Automatic paging: PHP program will be set according to the page break the content of the page, and then generate a different static pages. The method is efficient and requires a high tag for handling different html tags.

5 We submit the form, a limit can not be ignored is to prevent users who repeatedly submit the form, because there may be a user continuously hits the submit button or a malicious attacker to submit the data, then we submit the data after processing, such as modifying or adding data to the database when they will get into trouble.

So how do you avoid duplicate submission form this phenomenon happen? We can see from many aspects, first from the front end to make restrictions. In the front-end javascript is disabled after a button is clicked, the disabled, this simple method of preventing multiple clicks the submit button, but the disadvantage is that if the user has disabled javascript script is invalid. Second, we can do after submitting the redirect page redirection, that is submitted after the jump to a new page, the main F5 avoid duplicate submissions, but there are drawbacks. Thirdly, it is made unique database index constraint. Fourth, it is to do the session token authentication.

6 PHP's serialize a sequence of the variable, the variable type and returns a string expression with a structure, but JSON is a lighter, more user-friendly format for interfaces (AJAX, REST, etc.) for data exchange. In fact, both are in a string manner to reflect a data structure. So what difference does it have between them?

We may see the contents of a database or stored in a text file with a long list of seemingly has a special meaning in the text string some old WEB system. We look carefully will find that it has a data type and structure information, but it is not easy to read manual, it is only suitable PHP program reads. PHP's serialize the array is serialized and stored. We assume that there is such an array:

0 Use PHP to achieve distributing red envelopes, and when we enter the number and total amount, PHP will be randomly assigned to each of these two values based on the amount, to ensure that everyone can receive a red envelope, it is to ask the various amount of red envelope, all of the total amount should be equal to the total amount of red envelopes.

We first have to analyze the law.

3 Typically the user to use the browser web form to submit data to the server post, we use PHP receiving user data POST to the server, and appropriate treatment. But in some cases, such as the user using the client software to send data to the server-side post php program, rather than using $ _POST to identify, then how should we handle it?

$ _POST Is an array variable is passed by way of HTTP POST method consisting of automatic global variable. Such as using $ _POST ['name'] you can receive a web form and web data asynchronously over the post, namely $ _POST can only receive a document type Content-Type: application / data x-www-form-urlencoded submitted.

1 In the previous article, we use HTML5 to listen to the phone in order to achieve a shaking effect. Shake the phone can be applied to many scenarios, such as a shake to change the draw, shake songs, search. In this paper, I will tell you how to use HTML5 + PHP + jQuery to achieve the effect of mobile phone shaking to change clothes.

3 We need a dynamic display of data in some applications, such as the current line number, the current transaction total, at current exchange rates, etc., need real-time refresh the front page for the latest data. This article will tell you with examples using jQuery and PHP to achieve dynamic digital display effect.

8 We need to use to track user information Session and Cookie, such as user login authentication, user browsing history record store shopping cart data, user session valid time limit. Today we come to understand how to operate under PHP is the Session and Cookie.

PHP's $ _SESSION current user data can be stored, when the user visits WEB site, PHP will give users access to each create a session ID, the ID is a unique ID, saved on the client, and the user's session data is saved to the the service side, PHP can be stored for each different user information when the session expires, the user session information will be invalidated.

3 Projects often require some headache functions, as developers should organize its own library, when you need it can be copied. The authors collected dozens of commonly used functions in PHP project, guaranteed to run properly, you just copy and paste into your project.