PHP's garbage collection mechanism is very important in any development language, and PHP's garbage collection mechanism allows developers to avoid memory leaks as much as possible during the development process, and to automatically reclaim
expires is a Web server response message header field that, in response to an HTTP request, tells the browser that the browser can cache data directly from the browser before the expiration time, without having to request it again.
Cache-control
Study a bit ~ method many ~ finally decided to use Excel import ~ searched the Internet A lot of this information, found that the Excel file is saved as a CSV file, and then imported from the CSV file. Here is an example of importing an Excel file
Newly installed Windows7 64-bit system, equipped with a lot of things, always have such a son of thwart, yesterday in the beginning with the arrangement Php+apache, Echo phpinfo () completely no problem, but once connection MySQL will render the
See a few symbols about PHP today. One is @, this is added to the front of a variable, to suppress the PHP interpreter error, that is, even if the error is not displayed.
There is also a more important symbol for PHP's range resolution operator (::)
Variables in PHP
Variables are used to store values, such as numbers, text strings, or arrays.
Once a variable is set, we can use it repeatedly in the script.
All variables in PHP start with the $ symbol, and the variable names are
The following code implements the ability to include different files depending on the file name of the browser's address bar parameter.
Copy the Code code as follows:
$file _name = $_get["filename"]; Get the current file nameInclude ("$file
Chart Library
The following class library allows you to easily create complex diagrams and pictures. Of course, they require the support of the GD library.
Pchart -a library that can create a chart.
Libchart -This is also a simple statistical
This is the fourth file of the system. Upload.php is responsible for the main, file name verification
, upload files and file addresses for archiving
File Upload
Uploaded columns $col, $upfile uploaded files, $writer author, $intro profile
Copy CodeThe code is as follows:
Class Searchdomain{var $domain = "";function SetDomain ($udomain){$this->domain = $udomain;}//Get whois and analyze domain name statusOK is not registeredNon-null value expiration timeNull value Unknown//function
/*******************************************************
Author: Wu Zhenhen (Biz)--phpscript
E-mail:wuzhenheng@china.com
web:http://phpscript.osh.com.cn
File name: AdRotator.class.php3
Copyright Notice:
If you use this file, please write an e-mail
/*
There are two main ways to handle MySQL transactions.
1, with Begin,rollback,commit to achieve
Begin a transaction
ROLLBACK TRANSACTION Rollback
Commit TRANSACTION Acknowledgement
2, directly with set to change the MySQL automatic submission mode
Defined:
The method that begins with the two line "__" in the PHP class is called the Magic method.
Classification:
For example: Construction method: __construct; destructor: __destruct; dynamic reload: __set (), __get (), __call (), __callstatic ()
More than 5.30 of the version can be used, inherited the characteristics of the previous version of the fast redirection (separate classes, all using static calls), add a very important function and properties, can invoke other URLs in the module,
search, I want to use, paste it out, look at the wood has a problem ah! Echo $HTTP _host is the domain name to output!
function pma_getenv ($var _name) {
if (isset ($_server [$var _name]) {
return $_server [$var _name];
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