PHP Auto Update news DIY

We browse some websites, often see some news is just updated soon, if it is artificial maintenance, it would be a very cumbersome work. However, we can use the program to control the implementation of the update operation, things will become very

PHP uses Imagick to generate PNG thumbnails from PDF

Php_imagick what? A php extension that allows PHP to invoke ImageMagick functionality. Using this extension enables PHP to have the same functionality as ImageMagick.ImageMagick is a powerful, stable, and free toolset and development kit that can

PHP security prevents. Inc Configuration Information exposure

Discover that the current project is to put all the included files under the home directory, as shown in the following figure: The site Directory is public, in addition to the entry file, all the source code and configuration files, are outside

Preventing XSS cross-site scripting attacks with PHP programming

Many domestic forums have a cross-site scripting loophole, foreign also many such examples, even Google has appeared, but in early December revised. (Editor's note: For cross-site scripting exploits, readers can refer to the "detailed XSS cross-site

PHP mysql_real_escape_string Anti-SQL injection detailed

The mysql_real_escape_string () function escapes special characters in the string used in the SQL statement. The following characters are affected: The code is as follows Copy Code X00NR'"X1a If successful, the

PHP Spreadsheet_excel_reader read Excel files

This article is mainly about the use of Spreadsheet_excel_reader to read Excel files, when you have a large amount of data on the site or have a lot of member data when it is necessary to import the day data into Excel backup, for which we provide a

PHP fwrite Write files

PHP write files, PHP and ASP can be the same as the operation of the file,fwrite to write the file Now that you know how to open and close a file, you can get the most useful part of the file operation, write! There is really only one main

PHP Filter Safe Character filtering

PHP filters are used to validate and filter data from unsafe sources, such as user input.-------------------------------------------------- ------------------------------What is a PHP filter?A PHP filter is used to validate and filter data from

PHP mysqli preprocessing statement Two instance code

PHP tutorial MySQL Tutorial I preprocessing statements two instance code /*=========================MYSQLI_STMT preprocessing class (recommended) =========================*//*=============================== Advantages: High efficiency, safety ======

Use iptables to prevent Php-ddos external contract

Recently a period of time php-ddos flooding, a period of time before the VPS was hackers hanging horse, a few months of traffic ran hundreds of G, a bit of doubt is being used to php-ddos, so today reinstall the VPS system and reconfigure the

PHP generates simple code for XML (example description)

When working with xml-based applications, developers often need to build XML-encoded data structures. For example, the XML state template that is based on user input in the Web, the server requests XML statements, and customer responses based on the

CentOS 7 Uninstall Apache mariadb PHP and other methods

Due to work needs, may have to carry out Apache mariadb PHP services such as uninstall, gossip not much to say, directly on the method.Apache UninstallOur first example would be to take Apache for an axe. Believe it or not, now I'm going to unload

PHP four basic algorithms: bubbling, selection, insertion and quick Sort method

Transferred from: http://www.php100.com/html/php/rumen/2013/1029/6333.htmlMany people say that the algorithm is the core of the program, a program is better than poor, the key is the merits of the program algorithm. As a primary phper, although it

Install php mcrypt extension in ubuntu

Error screenshot1. Install the Mcrypt package The code is as follows: Copy code Php5-mcrypt libmcrypt4 libmcrypt-dev Sudo ln-s/etc/php5/conf. d/mcrypt.

Php file download (restricted download speed) implementation code

*/$ File = "testbench"; // file to be sent to the client$ Speed = 8.5; // kb/s download rate limitIf (file_exists ($ file) & is_file ($ file )){Header ("cache-control: private ");Header ("content-type: application/octet-stream ");Header

Php obtains the Upload file type and obtains the file suffix.

The code is as follows:Copy code // Obtain the image format, including jpg, png, and gif.Function get_type ($ img_name) // Obtain the image file type{If (preg_match ("/. (jpg | jpeg | gif | png | bmp) $/I", $ img_name, $ matches )){$ Type =

Common php regular expressions (1/9)

1. Use the ereg function.2. Usage example of the eregi () function.3. Replace the matched string.4. Replace the matching string with eregi_repalce.5. Use the function split ().6. Use the split () function.7. The SQL _regcase () function generates a

Comparison of cookie and session usage in php

1. cookie data is stored in the client's browser, and session data is stored on the server.2. Cookies are not very secure. Others can analyze the cookies stored locally and perform cookie spoofing. session should be used for security reasons.3. The

Test the exclusive operation for PHP flock file locking

Flock-lightweight consultation file lockingFlock () function prototypeBool flock (int handle, int operation [, int & wouldblock])PHP supports a lightweight method of locking all files in consultation (that is, all access programs must be locked in

Example of calculating two-dimensional array average value/group average value in php

Calculate the average value of an array. Calculate the average value of a two-dimensional array. The code is as follows:Copy code $ Array = array (Array ('class' => 'A', 'value' => 3 ),Array ('class' => 'A', 'value' => 4 ),Array ('class' => 'B',

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