PHP

According to PHP, servers running PHP are vulnerable to a variety of malicious program attacks, including allowing attackers to execute malicious code and DoS attacks. The PHP organization released an upgraded version to fix these vulnerabilities,

If you want to implement password protection based on each script, you can create a basic authentication mechanism by combining the header () function with the $ PHP_AUTH_USER and $ PHP_AUTH_PW global variables. Generally, the server-based

If you are using PHP4.2 or later, please refer to here. Set register_globalson or add the following code: functions (function_exists (ini_get) {$ onoffini_get (register_globals);} else {$ region (regist if you use PHP4.2 or later, please refer to

The importance of focusing on security issues is far from all that prevents users from maliciously damaging your program. The most effective but often overlooked method is to consider its possibility when writing code. It is important to pay

Hello everyone, I decided to share with you some notes that can improve the PHP code performance: 1. PHP labels I know some people prefer to use the scaling label when writing PHP code -??, But this is not a good habit, because scaling labels cannot

5. other miscellaneous 5.1 generate images PHP can operate and process images. If you have installed the GD library, you can even use PHP to generate images .? Header (Content-type: imagegif?##stringimplode(%argv,%~imimagecreatefromgif(imagesbutton1.

Many problems are caused by Chinese characters. if the file name is better to use Chinese characters, the current solution is to generate an ID, this ID is used as a file name. if the url contains Chinese characters, the current solution often uses

It is quite difficult to name variables, functions, and classes. in addition to taking into account the ease of understanding of the variable name, you also need to worry about whether the name has been used elsewhere. in a short script, the second

The settings used to set access control are mainly for directories and files. However, you can also set access control for different URLs, in this way, you don't have to worry about whether ScriptAlias and Alias have set the path out of the

What is VM service the so-called VM service refers to virtualizing a machine into multiple WEB servers. For example, a company wants to provide host hosting services, which provides WEB services for other enterprises. Therefore, it certainly does

On the first day, do not talk about any programming knowledge. let's talk about the thief program. the example is the best explanation. I believe everyone can steal the software after today's tutorial. of course, it is also true that you want to

Createtablestream (iptext, sTimeint, visitsint, infotext );? If ($ day0) $ day0; $ mlinkmysql_connect (localhost, ajax, xxxxxxx); total number of times the home page has been browsed so far $ queryselectSUM (visits) astvisitsfromstream; $

In our example, $ format_array is our new array, which contains the query results and is formatted for output. First, cycle every element in $ result_array and assign it to a two-dimensional array for sorting. At the same time, we use the strtolower

PHP installation author: sports98 uses PHP environment more and more WEB work environment, PHP version is gradually improved from PHP3 to PHP4, then to php4.2.2php4.2.3, php4.3.0RC2; some time ago, someone asked a question about the combination of

Chapter 5 PHP3 language structure (I), Control Structure 1. IF statement is an important feature of most languages, it executes program segments according to the conditions. PHP's IF statement is similar to C: if (expr) statement. as discussed in

? Phpif (eregi (^ [_. 0-9a-z-] + @ ([0-9a-z] [0-9a-z-] + .) + [a-z] $, $ email) {echo your e-mail through a preliminary check ;}? In this sentence, an eregi function is first applied, which is quite understandable. If you look for a book, you can

● Simplified and Traditional conversion supports conversion of Chinese characters in four situations, namely, internal code conversion and simplified and traditional conversion. The internal code conversion is simple and traditional, but it is

Online advertising has become a hot topic on the Internet. The 468x60 has become the size for advertisers. When processing an advertisement, if you can directly use a browser to send the 468x60 image file of the advertisement to the server that

Smarty's program design section: in the template design section of smarty, I briefly introduced some common settings of smarty in the template, this section describes how to start program design in smarty. PHP code: first introduce some elements in

Currently, many websites use verification codes to prevent users from automatically registering, logging on, and bumping through robots. The so-called verification code is to generate an image with a string of randomly generated numbers or symbols,