PHP

2.PHP Getting StartedThe online tutorials on the PHP site have been great. There are also links to some other tutorials. This section of this article will give you a bit of familiarity with PHP. I can not do without any omission, my purpose is to

javascript+php Application One: The dynamic realization of double pull-down menu in Web page making ---excerpted from the Internet In the Web page production, often encountered this situation, through the main Drop-down menu selection, dynamic

Cannot pass variables between "1" pages Get,post,session the automatic global variable is turned off in the latest PHP version, so the submitted variable from the previous page is to be obtained using $_get[' foo '],$_post[' foo '],$_session[' foo '.

The PHP program has been written for a long time, and naturally knows the functions he provides, and he offers a lot of features that really feel good, but sometimes it turns out that PHP lacks some functionality and always produces ideas for adding

Simple and modular maintenance is a feature of object-oriented programming. Objects are represented as classes with the same functions in the same namespace. We can add a class in the namespace without affecting other members of the

A simple comparison between empty () and isset. The code is as follows:Copy code $ Var = 0; // The result is true because $ var is empty.// The result is true because $ var = 0If (empty ($ var) {echo '$ var is either 0 or not set at all ';}//

Another case of strtr functionsThe result isI loves youNote that a of the third parameter does not appear in the result.4. I do not recommend replacing strtr with lessOkay. Why should I use this strtr function?The reason is that it is fastIt is said

The code is as follows:Copy code Function get_url () {$ Url = $ _ server ['request _ uri '];$ Parse_url = parse_url ($ url );$ Query_url = $ parse_url ['query']; // Retrieve url parametersIf ($ query_url)  {// Replace & page with null$ Query_url =

There are many character string operations in PHP, including the following:(1) echo, print, printf, sprintfThe first two functions are output strings. If there is a variable name in the string, it is replaced with its value.The last two functions

The code is as follows:Copy code  // Judge moblieFunction is_mobile (){$ _ SERVER ['all _ http'] = isset ($ _ SERVER ['all _ http'])? $ _ SERVER ['all _ http']: ''; $ Mobile_browser = '0 '; If (preg_match ('/(up. browser | up. link | mmp |

Single Form The code is as follows:Copy code File upload: // Determine whether a file has been selected in the pic file boxIf (! Empty ($ _ FILES ['file'] ['tmp _ name']) {Echo 'Selected Files ';} Else {Echo 'Select a file ';}// PS: ['tmp _ name'

Addform. Php file The code is as follows:Copy code News title: News: Add. Php file The code is as follows:Copy code Require_once ("mysql_inc.php"); // reference conn. php to connect to the database$ Title = $ _ POST ['title'];$ Content = $

Next we will introduce in detail the new session. upload_progress of PHP 5.4.PrinciplesWhen the browser uploads a file to the server, PHP stores the detailed information (such as the upload time and progress) of the file in the session. Then, the

Optional ziparchive parameters1. ZipArchive: addEmptyDirAdd a new file directory2. ZipArchive: addFileAdd the file to the specified zip package.3. ZipArchive: addFromStringAdd the content to the added file at the same time.4. ZipArchive:

PHP jump The code is as follows:Copy code Header ("location: http://www.111cn.net ");?> Header function usagePHP page Jump 1. header () functionThe header () function is a very simple method for page jump in PHP. The main function of the header

Due to the recent severe mass mailing of QQ junk information, the official team chose to detail the implementation of some WebQQ functions. The POST value obtained from friends has an additional hash parameter.This hash is encrypted in js.Below is

My php foreach () function can traverse the array and retrieve the key value of the array. How can I get the key name $ key? Or just take the first key name? For example The code is as follows:Copy code $ Keyarray = array ('000000' =>

Create a file upload formIt is very useful to allow users to upload files from forms.See the following HTML form for uploading files: The code is as follows:Copy code Filename: Pay attention to the following information about this form: The

It is often necessary to determine whether a file can be accessed. You can identify it by using the http status code. 200 indicates normal access, and 404 indicates that the page cannot be found. The code is as follows: The code is as follows:Copy

File_get_contents () remote file retrieval function, used to obtain remote page contentPreg_match_all () is used for global regular expression matching and multiple matches.Preg_match () is used for regular expression matching and match once for