File Uploads in PHP
A file upload is a special case of getting form input. Half of the story is putting togetherthe correct HTML. File uploads are specified in RFC 1867. They are supported byNetscape Navigator 2 and above, as well as Internet Explorer 4 and above. Placing aninput tag inside an HTML form with the type attribute set to file causes a text box and abutton for browsing the local file system to appear on the Web page. Browsers that do...
Showing posts with label php. Show all posts
Showing posts with label php. Show all posts
October 19, 2013
Operators in PHP
When comparing or processing variables and other values you use operators. Without them, PHP would be more of a word jumble instead of a language. In some unique cases, operators slightly alter the relationship between two variables or their function within PHP. Without further adieu,here they are..
Basic OperatorsAdd ( + ): $a = 1; $a = $a + 5; // $a is equal to 6Subtract ( - ): $s = 10; $s = $s - 5; // $s is equal to 5Multiply...
What is Session ?
Web is stateless, which means a new instance of a web page class is re-created each time the page is posted to the server. As we all know, HTTP is a stateless protocol, it can't hold client information on a page. If the user inserts some information and move to the next page, that data will be lost and the user would not be able to retrieve that information....
How PHP Works with the Web Server
The normal process a Web server goes through to deliver a page to a browser is asfollows. It all begins when a browser makes a request for a Web page. Based on the URL,the browser resolves the address of the Web server, identifies the page it would like, andgives any other information the Web server may need. Some of this information is aboutthe browser itself, like its name (Mozilla), its version (25.1), or the...
