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1. Optimize Your MySQL query CacheYou can enable the High-Speed query cache for queries on the MySQL server. It is one of the most effective ways to improve performance by quietly processing the database engine in the background. When the same query

1. Optimize Your MySQL query Cache You can enable the High-Speed query cache for queries on the MySQL server. It is one of the most effective ways to improve performance by quietly processing the database engine in the background. When the same

First, the principle of the Verification Code is to draw an image, write some words on the image, and then add some interference lines, pixels and other things, if you want to use php, you need to know which functions are drawn in php, and then use

Reprint Please specify source: http://blog.csdn.net/zhoubin1992/article/details/464695571.SAT Problem DescriptionThe satisfying problem of the combined paradigm (CNF) in propositional logic (SAT) is the core problem of contemporary theoretical

Random number Scroll Generator1#include 2#include 3#include 4#include 5 BOOLG_run =true;6 voidUserinput (void*){//to monitor input thread functions7 while(true){8 if(GetChar () = ='\ n')9G_run =!G_run;TenSleep (Ten); One } A } -

Mysql Stored Procedure example (insert data to different sub-tables), mysql Stored Procedure USE test;Drop procedure if exists test. generate_records;Delimiter $Create procedure test. generate_records (in v_count bigint, in v_phone bigint)BEGINSet @

1. Generate a random numberUse the for loop to generate several random numbers.Use a random function to generate a random number within the specified range. For example, rand () generates numbers between 1 and 15.Use a hexadecimal function to create

/*** Verification Code* 2011/8/21* Kcj**/Include "isLogin. php ";// Generate a 4-digit Verification Code randomly$ Num = '';For ($ I = 0; $ I $ Num. = dechex (rand (); // The dechex function is a decimal transfer binary.}Session_start (); // enable

  Let's talk about the next idea. Using PHP's curl function to store cookies, google's search page cannot be opened using file_get_connents. You must simulate the browser completely. Baidu is different. You can directly use file_get_conntens to

The GD Library in PHP5 generates a graphic verification code (with Chinese characters ). The graphic verification code generated using the GD Library in PHP5 is similar to the following one. use the GD library function to generate an image, and

Php verification code (tilt, sine interference line, pasting, rotating ). I haven't written any post for a long time. I have been busy with new projects. Recently, I have been trying to develop a simple and generous verification code program, which

? Php is a simple cache example: on this page, we need to extract N records from several tables and display them. because of the frequent operations on the database, we use the cache method, which remains unchanged within 24 hours, if the value is

The following describes how to randomly generate a set of non-repeated number implementation code in two PHP programs. For more information, see. The code is as follows: Copy the code? Php **... The following describes how to randomly generate a set

Designing your data analysis and performing effective and multi-level analysis on Web data is a key factor for the survival of many Web enterprises, the design (and decision-making) of data analysis tests is usually the work of system administrators

? Advertisement; # set the advertising code file $ log $ dirads. log; # set the ip record file $ ads_linesfile ($ ads); $ linescount ($ ads_lines); # total number of file lines ######## Random ad display ########## Function myads (){ $ Dir = "ads"; #

Many games and game systems require dice. Let's start with the simple part: throw a six-sided dice. In fact, rolling a six-sided dice means selecting a random number from 1 to 6. In PHP, this is very simple. Simple flipper Many games and game

In PHP, use the file_get_contents proxy method. in PHP, use the file_get_contents proxy method to obtain the code of the remote webpage. The code is as follows: $ Url = "http://www.bitsCN.com /"; $ Ctx = stream_context_create (array ( 'Http' =>

Practical PHP verification code (12 ). Verification codes are indispensable in application development. we often encounter issues related to registration by machines, so with verification codes, this type of behavior can be effectively prevented,

Phpmt_rand () random number function. In the php Tutorial, the mt_rand () random number function mt_rand () returns a random integer using the mersennetwister algorithm. Syntax mt_rand (min, max) indicates that if the optional parameters min and max

Complete PHP graphic verification code program source code !, The code is as follows: /* Website verification code program* Running environment: PHP5.0.18 is successfully debugged.* Gd2 graphics library is required (php_gd2.dll is enabled in PHP.