Php uses preg_match_all to match the image in the article ,. Php uses preg_match_all to match the picture in the article. sometimes we need to use php to retrieve and save the picture on the webpage. here we can use preg_match_all to match the
Here is the text of the article:
Basic concepts
OO programming (Object Oriented programming, OOP, object-oriented programming) is a computer programming architecture. One of the basic tenets of OOP is that a computer program is composed of a single
The following is a php file manipulation function. Of course, this is only part of it, and there are a lot of them that I didn't list.
First, the parse path:
1 Get the file name:
BaseName ();Give a string containing a full path to a file, this
We will 0-z (0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ) represent the value 0-35, such as the letter Z for 35. So I'm going to get a 5 digit number, the maximum amount of information is 36 of 5 square, 36^5 = 60466176, that is, the largest 5-bit number
First, the class library used
1, Phpqrcode (PHP library)
2. Qrcode.js (JavaScript Library)
Second, the use of Phpqrcode
Only PHP class library, that is, the generation of two-dimensional code in the background operation. Because in the background
1. Open GD Extension
Extension=php_gd2.dll
Apache restart
2. Example:
Scene:
Make a green picture of 500x300
① Creating a canvas
Canvas, a resource-based data. An image resource that can be manipulated.
Create a new canvas (new)
Imagecreate (wide,
Php retrieves the previous and next pages of an article. Php: how to obtain the previous and next pages of an article. This document describes how to obtain an article by using php. Share it with you for your reference. The specific method is as
The XML analysis function in PHP is not very useful in introducing the XML analysis function in PHP .. It should be clear after reading this article .... Php xml analysis functions I must admit that I like computer standards first. If everyone
PHP is a simple method for judging whether there are images in the article ,. PHP is a simple method to determine whether there are images in the article. The PHP program in this article is used to determine whether there are images in the article,
Here is the text of the article:
First, the encapsulation of
Encapsulation is the extraction of data and the operation of the data is encapsulated together, the data is protected internally, the other parts of the program only authorized
The following text:
PHP folder operation function
String basename (String path [, string suffix])
Give a string containing a full path to a file, this function returns the base file name. If the file name ends in suffix, then this part will be
The following text:
Create a new PHP file captcha_code_file.php
First open Sessionsession_start ();//define the foreground display verification code length & Width $image_width = +; $image _height = +; $characters _on_image = 6; $font = './monofont.
The code is as follows:
Usually the password retrieval function is not really able to retrieve the forgotten password, because our password is encrypted, the general developer will verify the user information through the program to generate a new
This article describes (advanced) how to connect PHP to the database to achieve the most basic addition, deletion, modification, and query (process-oriented) details. For more information, see section 1. connect PHP to the MySQL database.
2. add
Php generates the implementation code of the static HTML document when adding an article. PHP generates static article HTML in batches, but the standard is to generate an HTML article when adding the article and regenerate the HTML article when
In some complex systems, it is required to classify the information columns infinitely, in order to enhance the flexibility of the system. So how does PHP implement an infinite class classification? We use recursive algorithms in this article and
At the outset, I think a website registration and login These two functions is very magical, and later to study the discovery of the truth is very simple, then see how to achieve it ....http://mp.weixin.qq.com/s?__biz=MzIxMDA0OTcxNA==&mid=2654254777&
0x00 Preface
The last three white hat challenges are over, but people still do not care, discussing the writeup in the knowledge point, which is more interesting about the weak type of PHP:
Array (0) >999999999
This result is true.
In the
Snapping, second-kill is now a very common application scenario, there are two main issues to solve:1 high concurrency pressure on the database2 How to deal with the correct reduction of inventory ("oversold" issue) under competitive statusFor the
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