PHP

Example: SQL injection attack XSS attacks Copy Code code as follows: Arbitrary code Execution file contains and CSRF. } There are a lot of articles about SQL attacks and all kinds of anti injection scripts, but none of

Copy Code code as follows: /** * Serial Number generator */ function Snmaker ($pre = ' ") { $date = Date (' Ymd '); $rand = rand (1000000,9999999); $time = Mb_substr (Time (), 5, 5, ' utf-8 '); $serialNumber = $pre. $date. $time. $rand;

Understanding Crypt () As long as you have a bit of experience with a non-Windows platform may be familiar to crypt (), this function is called one-way encryption function, it can encrypt some of the code, but can not reverse the password back to

Simple Factory mode: ① abstract base class: class definition abstract Some methods to implement in subclasses ② inherits from the abstract base class: Implementing an abstract method in a base class ③ Factory class: Used to instantiate objects Read

This article is an example of how Php+jquery+ajax implements instant chat. Share to everyone for your reference. Specifically as follows: This is a simple use of jquery and PHP to do a chat room source code, we are here to use Ajax to read the

The encoding of the GBK simplified character set is represented by 1 bytes and 2 bytes at a time. When the high is 0x00~0x7f, it is a byte, and the high 0x80 above is represented by 2 bytes. Note: There are 2 in the brackets inside the system

1. Basic knowledge1.1 What is shell programming? In Unix, the shell is not a simple command interpreter (typically with DOS in Windows), but rather a full-featured programming environment. The Shell is part of the operating system that is used to

This example describes how HTML static pages invoke PHP files. Share to everyone for your reference. The specific methods are as follows: Static page seems to be unable to directly call the PHP file, but can use JS call way to invoke the PHP file,

The pages that generate static pages are very simple to define templates and template headers, and then replace them with Str_replace, which is the most common method, the other is to use ob_get_contents output to generate HTML, and one of the less

This example describes the PHP Web virus cleanup class. Share to everyone for your reference. Specifically as follows: Believe that a lot of people's web pages are often unreasonable in the php,asp,html,js and other files in the background with

When PHP parses a file, it looks for the start A single-line comment is only commented to the end of the line or the current block of PHP code, depending on which first appears. This means in//...? > or # ...? The HTML code after > will be

Picture clipping refers to a large background picture cropped out a designated area of the picture, the common application is in the user set personal avatar, can be uploaded from the picture, cut out a suitable area as their personal portrait

The example of this article tells the PHP management Nginx Virtual Host shell script, share for everyone reference. The specific analysis is as follows: Using PHP as a shell script is a handy thing to do. Of course, we can use PHP script to manage

This article illustrates the implementation of count in PHP to get the length of multidimensional arrays. Share to everyone for your reference. The specific analysis is as follows: Let's take a look at the following program run results:

This article is an example of PHP using file_get_contents instead of using curl method, share for everyone to reference. The implementation methods are as follows: File_get_contents instead of using curl is rare, but sometimes you run into the

In this paper, we analyze the efficiency of math function built in PHP. Share to everyone for your reference. The specific analysis is as follows: As the title shows, for a friend who has not done large-scale operations, may not know, PHP math

This example describes how PHP uses the Fsockopen function to send post,get requests to get web content. Share to everyone for your reference. The specific implementation code is as follows: Copy Code code as follows: $post = 1; $url =

This article describes in detail the PHP dynamic compiler appears cannot find autoconf solution. Share to everyone for your reference. The specific methods are as follows: After installing PHP, you want to dynamically compile PHP's memcache

PHP abstract method and abstract class Abstracts keywordThe abstract keyword is used to define abstraction methods and abstract classes. Abstract methods Abstract methods are methods that do not have a method body, specifically when the method

Iconv function Library can complete the conversion between various character sets, which is an indispensable basic function library in PHP programming. Usage is as follows: Copy Code code as follows: $string = "Welcome to the cloud-