GOOCODE - Find your code/scripts

0 In the AJAX era, network requests such as APIs are made through XMLHttpRequest or encapsulated frameworks. The fetch framework now produced is simply to provide more powerful and efficient network requests. Although there are currently a few browser compatibility issues, when we make some asynchronous requests, we can use fetch to make perfect network requests.

0 Never trust external input, don't trust any data from a data source that is not under your direct control. In actual development, there is always someone intentionally or unintentionally injecting dangerous data into PHP code, so PHP security programming becomes important. Generally, we deal with external input security ideas: filtering input and verifying data.

Filtering input means escaping or deleting characters that are not safe from external data.

2 When operating the data list, you need to adjust the order of data rows, move up and down the line as the top line data, etc., these operations can be done by clicking a button in the front, and along with the simple dynamic effects, easy implement sorting tabular data.

The page is a simple data table, we were placed in the data row "Up", "Down" and "top" three links, and three class attributes are defined, we have to implement these operations through jQuery.

7 Often see some sites in order to attract the user's attention fixed place banner ads at the bottom of the page, the user scrolls the page, banner ads have been fixed in bottom of the page, not with the page scrolling and scrolling, of course, generally allow users to turn off the banner, and set certain Do not show this banner time. This article describes the use of CSS + Cookie to achieve this effect.

First, we'll banner advertising html code into bottom of the page, because it is finally loaded. You can also use an external js dynamically inserted into the bottom of the page. Entire HTML structure consists of a mask layer .float_layer, content layer .float_content, of which .float_bg ad section, the content can be images, text and other elements in any form of html, .float_close is the Close button, the user can turn off the display do not like advertising.

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 Whenever significant during the holiday season, the major mainstream Home will put festive costumes, designers typically use a substantial background pictures to get a better visual impact, of course, also taking into account that some users are not accustomed to this great background, then place the "Close" button in the background is necessary, users simply click on the "Close background" button, a substantial background image will disappear.

We use javascript to control the background image to show and hide, when you click the close button, so that the page does not load control CSS background image while recording COOKIE parameters and set the cookie is valid, then refresh the page in the cookie is valid, is not reloading background, and if the cookie fails, the background image will reload.

4 cURL is a powerful PHP library, using PHP's cURL library can be simply and efficiently crawl the web and collect content, set the cookie to complete the simulation login page, curl provides a rich set of functions that developers can get more from the PHP manual About cURL information. In this paper, the simulation Login Open Source China (oschina) as an example, and share cURL use.

PHP's curl () in terms of efficiency crawled pages is relatively high, and supports multi-threading, and file_get_contents () would be slightly more efficient, of course, need to open when using curl under the curl extension.

10 In php projects, often use to label some filtering regular expressions, collections for spare.