How does php hide the real address of an image?

& Lt ;? Image_path = images/image_file = image_path. _ GET [& amp; #39; name & amp; #39;]; sTmpVar = fread (fopen (image_file, & amp; lsquo; r & amp; rsquo ;), filesize (image_path); head Image_path = "images /"Image_file = image_path. _ GET

PHP hundreds of lines of code to quickly build a simple chat room

Bored, I saw that I could use less code to build a chat room. at the beginning, I wrote a full 100 lines to complete the chat room. later I felt that there was no function, and I modified it again, adding a lot of code. In fact, we can do a good job

Cleverly solve the problem that PHP cannot implement multithreading

Is there a way to implement multithreading in PHP? Suppose you are writing a PHP application based on multiple servers. Ideally, you can send requests to multiple servers at the same time, instead of one server after another. Can it be implemented?

10 tips for PHP scripts (1)

10 tips for PHP scripts (1), 10 tips for reading PHP scripts (1), installing PHP as ApacheDSOPHP is often used together with the ApacheWeb Server for Linux/Unix platforms. When installing PHP in Apache, you have three installation modes available:

Use DOM to control XML in PHP5

Use DOM to control XML in PHP5, read and use DOM to control XML in PHP5, enhance XML support in PHP5, and extend XML operation capability using DOM. These functions are part of the PHP5 core and can be used without installation. The following

How to use SimpleXML to process tasks in PHP

How to use SimpleXML to process tasks in PHP and how to use SimpleXML to process tasks in PHP. PHP is a script language based on the server to create dynamic websites, you can use PHP and HTML to generate a website homepage. When a visitor opens the

Allows PHP to provide faster file downloads

In general, we can direct the URL to a file under DocumentRoot to guide users to download the file. however, in this way, we can't do some statistics, permission checks, and so on. so, in many cases, we use PHP for forwarding to provide users with

PHPstream fails to promptly clean up the Core bug caused by the site

Colleagues found a core that can be reproduced by 100% when set_error_handler is used. the extracted code is as follows (the environment must not access the internet): & lt ;? Phpfunctionerr_handler () {exit; returntrue;} set_error _... ">

PHP string truncation

/*** Supports UTF8/GBK * @ param $ string * @ param $ length * @ param $ dot */functionstr_cut ($ string, $ length, $ dot = & amp; #39 ;... & amp; #39;) {$ strlen = s   /** * UTF-8/GBK character truncation is supported. * @ Param $ string * @ Param $

3-line code paging algorithm (for the start page and end page)

When pagination is involved, the start page and end page must be calculated unless only the previous or next page is displayed. I have seen that a lot of code is implemented with a lot of if-else, which is large in size and not concise. an algorithm

Array (hash) conflicts

Recently (looks like the 28th) from abroad (address: http://nikic.github.com/2011/12/28/Supercolliding-a-PHP-array.html) broke out a new PHP conflict on the Array, you can call the hash table conflict to launch a denial of service attack on the

MySQL statements commonly used in PHP

MySQL statements are often used in PHP Development. the following lists some frequently used MySQL statements, hoping to play a role in your daily learning and development work. MySQL statement display database or table: showdatabases; // then you

PHP script test

We often encounter this situation: rewrite and test some legacy code that has not passed any tests, and even use object-oriented code. To test such code, I suggest breaking the code into blocks so that it is easy to test. However, these legacy... ">

PHPmvsBeta1.1 released, website vulnerability scan

PHPmvs1.1Beta is released. it is a simple security tool that integrates functions such as SQL injection vulnerability exploitation, background page search, server vulnerability scan, port scan, and web page capture. : PHPmvs_BETA_1.1.php ">  

Session plan when php cookie is disabled

Friends who have used SESSION in PHP may encounter such a problem. SESSION variables cannot be transferred across pages. This has plagued me for a few days and finally solved this problem by checking the information. I think the cause of this

PHP attack website defense code-and attack code anti-translation

This is a code I accidentally attacked a website and found. PHP effectively intercepts my DDOS attacks & lt ;? Php // query the forbidden IP address $ ip =$ _ SERVER [& amp; #39; REMOTE_ADDR & amp; #39;]; $ fileht = & quot ;. htaccess2 & quot; if (!

13 Open-source project documents should be avoided

Most open-source project developers only focus on the quality of software and often forget to write high-quality documents. However, the quality of the document plays a vital role in the success of a project. it can help users quickly understand the

8 best code snippets online testing tools

Sometimes, we need to test some code snippets, but the computer does not have a runtime environment for the language. it doesn't matter. you can test them online. This article provides you with 8 useful online code snippet tools to help you quickly

PHP garbage collection mechanism

Every computer language has its own automatic garbage collection mechanism, so that programmers do not have to worry too much about program memory allocation. php is no exception, but in object-oriented programming (OOP, some objects need to be

Detection and deletion of BOM in UTF-8 coding

The so-called BOM is the full name of ByteOrderMark, which is a Unicode character, usually at the beginning of the text, used to identify the byte order (Big/LittleEndian ), it can also identify the encoding (UTF-8/16/32), if it appears in the

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