现在主流的网站开发语言无外乎asp、php、asp.net、jsp等。网页从开始简单的hmtl到复杂的服务语言，走过了10多个年头，各种技术层出不穷，单个的主流技术也在不断翻新的版本，现在分析下各种语言的区别、优势、劣势、...

1. IntroductionWriting PHP applications is pretty easy. Most people grasp the syntax rather quickly and will within short time be able to produce a script that works using tutorials, references, books, and help forum forums like the one we have here at PHP Freaks. The problem is that most people forget one of the most important aspects that one must consider when writing PHP applications. Many beginners forget the security aspect of PHP. Generally, your users are nice people, they will do as they are told and you will have no problem with these people whatsoever. However, some people...

Do you still remember the movie The Matrix? Do you still remember the cool matrix effect in that movie? How is that effect achieved? Shaun Dunne shared a piece of HTML5 code which displays a cool matrix effect. The matrix demo can be found here.Below is the code which he achieves this effect: withvar s = window.screen;var width = q.width = s.width;var height = q.height = s.height;var letters = Array(256).join(1).split('');var draw = function () { q.getContext('2d').fillStyle='rgba(0,0,0,.05)'; q.getContext('2d').fillRect(0,0,width,height); q.getContext('2d').fillStyle='#0F0'; letters.map(f...

When downloading a large file, we may encounter some network issues which causes download termination and only part of the file is downloaded. When the network connection resumes next time, we may need to redownload the file again from the beginning. In order to save bandwidth, http provides a Range parameter in its header which can control the file transfer flow. With the range parameter in the header, we can resume the download from where we stop.Here is a piece of PHP code snippet which uses the range header to control which part of the file to transfer: <?php $filename=$_GET['fi...

Since Facebook is now using OAuth 2.0 to authenticate apps to access user information. the SDK of Facebook has provided developers some useful functions to get authentication done. For example, in PHP SDK, there are getAccessToken(), getLoginUrl() etc. But unfortunately, for me I cannot use getAccessToken() method to get the user access token, it only returns me the app access token. Finally I gave up this approach to get access token for the time being. I may later retry this approach if I have time.Today I show you another way to get the access token, which is explained on Facebook's develop...

In a PHP application, cURL is frequently used to make connection to remote server to request some resource. It can be used to transfer data with different protocols such as HTTP, HTTPS, FTP etc.While using cURL in PHP, someone may get an error with message similar to "SSL certificate problem: self signed certificate in certificate chain".This may happen when cURL tries to make a SSL connection server and the server returns a server certificate which is self-signed and it's not trusted by the client(in the client CA store). In this case, you may need to follow below steps to resolve this issue....

This post is about uploading files to FTP server in asp.net development. You will learn step-by-step to upload files programmatically to FTP web server. All the examples shared in this post are intended by professionals to make you learn about the subjectHere, I will explain you an example of Uploading Files to FTP Server programmatically in C#.Net. Using this approach, the Files will be programmatically uploaded to FTP Web Server.For example, I will create a function in which we will simply provide the local file name to upload, upload path of FTP (including host name, FTP username and FTP pa...

By default, PHP uses the 'PHPSESSID' cookie to propagate session data across multiple pages, and by default it uses the current top-level domain and subdomain in the cookie declaration.Example: www.domain.comThe downside to this is that the session data can't travel with you to other subdomains. So if you started a session on www.domain.com, the session data would become unavailable on forums.domain.com. The solution is to change the domain PHP uses when it sets the 'PHPSESSID' cookie.Assuming you have an init file that you include at the top of every PHP page, you can use the ini_set() functi...