a code execution function
A function in PHP that can execute code. such as Eval (), assert (), ', System (), exec (), shell_exec (), PassThru (), Escapeshellcmd (), pcntl_exec (), etc.
Demo Code 1.1:
Two file contains code injection
The file
Session management is an important part of web development, including sessions and cookie two technologies. This chapter describes the creation and use of cookies and sessions.
Cookies:
Cookies are often used to identify users. Cookies are small
Some time ago completed the server from FreeBSD4.10 to 6.1 upgrade, while the PHP also upgraded to the latest Php5.1.4,apache also upgraded to the latest Apache2.2, in order to better improve the performance of the system to consider some of the PHP
The example in this article describes how the javascript+php implementation displays local time based on user time zones. Share to everyone for your reference. Specifically as follows:
The following code is used across time zone applications, which
Using PHP encoding to generate PDF files is a time-consuming task. In the early days, developers used PHP and fpdf to generate PDF files. But now, there are a lot of libraries available, and you can generate PDF documents from the HTML files you
In this chapter you will learn about attractive and confusing sockets (Sockets). Sockets is a feature that is not fully exploited in PHP. Today you will see the creation of a server that can use a client-side connection and connect using a socket on
Ajax| counter
These days just touch Ajax, write a very simple counter.The client file counter.htm is used as a template, counter.php calls the counter.htm template.When accessing counter.php, the database records IP, time, counter plus
In general, we can direct the user to download files by directly having the URL point to a file located under document root.
However, in doing so, there is no way to do some statistics, permission checks, etc. work. So, a lot of times, we use to
"One, server-side Configuration"Security, PHP code writing is on the one hand, PHP configuration is very critical.We PHP hand-installed, PHP default configuration file in/usr/local/apache2/conf/php.ini, we mostly want to configure the content in PHP.
First, create a new arrayThe array has no size limit, so you can create an array simply by creating a reference, for example: $state [0]= ' 111 '; $state [1]= ' 222 '; If the index value is a numeric index and is incremented, the index value can
1 origin
With regard to PhP, many people intuitively feel that PHP is a flexible scripting language with rich library classes, simple to use, and secure. It is very suitable for web development, but its performance is low. Is PHP performance really
PHP Learning Series (1) -- string processing functions (4), php Functions
16. The hebrevc () function switches the flow of Hebrew text from right to left to the flow from left to right. It also converts the new line (\ n) to . Only ASCII characters
Http://trash.chregu. TV /phpconf2003/examples/New XML features of PHP5Translated by Christian Stocker ice_berg16)Target readersThis article targets all PHP developers who are interested in the new XML Functions of PHP5. We assume that the reader has
Writing php programs over the past few days, I feel that asp, asp. Net, and jsp are not as good as asp. Net. For example, session uses session_start ();, which makes it inconvenient to use file jump headers ....Maybe it's some of the unfamiliar php
If you have never been familiar with MongoDB or have a little understanding of MongoDB, if you are a C # developer, take a few minutes to read this article. This article will take you step by step to get started easily. Read directory 1:
Han Shunping graduated from Tsinghua University. he once developed erp in Yonyou software, and developed email system and uc in Sina. he has rich development experience and is proficient in a variety of programming languages and databases. this is
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