PHP

Example of using file cache in php In web development, you can use file caching to greatly relieve the pressure on the database. The following code is an example of using file caching in php. CacheLayer. php Class

Php converts a color to a deeper color function. This php function can make the specified color deeper. Function ColorDarken ($ color, $ dif = 20 ){ $ Color = str_replace ('#', '', $ color ); If (strlen ($ color )

PHP: how to obtain letters on the Chinese homepage Function getfirstchar ($ s0 ){ $ Fchar = ord (substr ($ s0, 0, 1 )); If ($ fchar> = ord ("a") and $ fchar = ord ("") and $ fchar $ S = iconv ("UTF-8", "gb2312", $

PHP implements html compression functions Function compress_html ($ string ){ $ String = str_replace ("\ r \ n", '', $ string); // clear line breaks $ String = str_replace ("\ n", '', $ string); // clear the line break

PHP implements simple symmetric encryption and decryption methods /** * General encryption * @ Param String $ string the String to be encrypted * @ Param String $ skey encrypt EKY * @ Return String */

Php code for processing file downloads Php code provided for download on the server. you can specify the file name to be downloaded and the file content to be dynamically specified. // Local file that shocould be sent to the

Use php to generate the card number and password /* 1. Generate a random number 2. insert a table 3. query 4. yes is returned. */ Function mak () // The algorithm for generating the card

Php arbitrary hexadecimal conversion $ Int = 36;$ Str = array ();$ Flag = 0;// Echo chr ($ int % 36 + 87 );While ($ int! = 0){If ($ int % 36 Else $ str [$ flag ++] = chr ($ int % 36 + 87 );$ Int/= 36;}For ($ I = $

Ultra-lightweight open-source PHP Framework: FatFreeFramework A powerful and easy-to-use PHP microarchitecture is designed to help you build dynamic and powerful Web applications-fast!The size of the entire framework is less than 60 kB.

Back up mysql database with php code $ Database_name = 'somedb '; $ Table = 'sometable '; Define ('H', 'localhost'); define ('N', 'root') define ('P', 'password'); define ('t ', $ database_name );

PHP code for retrieving memory usage information With this php code, you can know the usage of RAM (memory) on your server. Echo "Initial:". memory_get_usage (). "bytes \ n "; /* Prints Initialize: 361400 bytes */

Code for generating CSV files from a PHP array The following code generates a CSV file from the PHP array. Function generateCsv ($ data, $ delimiter = ',', $ enclosure = '"'){ $ Handle = fopen ('php: // temp ', 'R + ');

Upload images and use ImageMagick to generate thumbnails With ImageMagick, you can easily and quickly create thumbnails, which is much easier than using PHP. // Location to upload main image: $ MainDir = $ _ SERVER

Traditional and Simplified PHP functions Class utf8_chinese { Private $ utf8_gb2312; Private $ utf8_big5; Private $ data; Public function _ construct ($ data ){ $ This-> utf8_gb2312 = $ data ['

Php uses Zend_Mail to send emails (to reset the password of emails) Include_once 'Conn/conn. php '; Require_once 'zend/Mail. php'; // call the email sending file Require_once 'zend/Mail/Transport/Smtp. php'; //

Convert the linux runtime format into a readable php code $ Exec = shell_exec ('uptime '); $ Uptime = explode ('up', $ exec ); $ Uptime = explode (',', $ uptime [1]); If (strpos ($ uptime [0], 'day ')){

Php code for backing up mysql data ##################### // Deployments ##################### // Define the name of the backup directory Define ('backup _ dir', './mybackups '); // Define

Simple php lucky draw code /** * Lottery function * * @ Param integer $ first start number * @ Param integer $ last end number * @ Param integer $ total winners * * @ Return string *

Youcai open course notes: php design mode (1) singleton mode I recently launched three open courses on design patterns. now I will summarize the application of the design patterns in PHP. this is the first Singleton mode of creation

The function of the IP address of the other party is automatically blocked when CC or DDOS attacks occur. This function is used to count the total number of visits per visitor in a short period of time. if the limit is exceeded, TRUE is