MySQL count how to submit efficiency

There is a program that first checks a certain number of user $data from the user table, and then the foreach array, from the user list count (*) where pid= $value [' ID '] to count the number of subsets Loop 200 data need more than 5 seconds, if

PHP Limits Malicious commits

Now in the review system to improve the site, because the design is not to let users enter the verification code, but the recent period of time found by malicious users malicious brush comments, I have just started to do a limit, such as users must

MySQL Federated index hit rule

1.5 fields have a federated index, what are their rules? What's going to happen? 2. If the two fields are separate indexes, where a=x order B is used by which index, and where a=x order by C is indexed, the C field is not indexed. It's not easy to

Question of a MySQL query in PHP?

The problem is this: 做一个APP接口,获取联系人列表,但是联系人分 0.管理员 1.绑定用户 2.亲朋好友 3.app好友 ,然后有一张im表,里面有个对应的im_id,当联系人为0和1时,就返回im_id,如果是2,3,则不返回.如果只是单纯的返回,没有类型条件的话,join就行了,但是现在有了类型的区别.这个怎么做? Reply content: The problem is this: 做一个APP接口,获取联系人列表,但是联系人分 0.管理员

Questions about the Project Transfer server

The project has just been switched on to the new server. It was written by people before the company. There is a problem now. After the transfer, even with the previous cache file has been transferred over. Because I didn't use it before. The

Some questions about official documents in PHP

The following issues run on php5.5 Little brother just learned PHP a few days Ask the Great God for advice 1. The official documentation given in this exampledeclare(strict_type=1);Why does this strict statement appear as an unsupported statement ..

Design Patterns-How do you implement a class like plug-in center in PHP?

There is a php config file with some class names stored in it. How to write a class, the config file in the class new out, and to call their run method (these classes do not exist, and later added, but all classes have a Run method)? I want to pass

Specification for a table structure foreign key

There is a scenario like this: Users publish articles, and each article is unique to the user. Two tables:User (ID,......)Article (ID,......) Two tables are one-to-two. Now the question:The ID in user is the primary key, and the self-increment Do

Curl_exec return value?

Curl_exec the data returned by this function is displayed directly in the browser, how to save the data in the variable Reply content: Curl_exec the data returned by this function is displayed directly in the browser, how to save the data in

Does Laravel5.1 have the more useful infinite Classification (tree) of packages?

Does Laravel5.1 have the more useful infinite Classification (tree) of packages? Thank you. This is even better if the following features are encapsulated: Infinite classification of one-dimensional arrays Infinite classification of

Website Picture CDN Cache, how long after the new upload image, updated?

Website Picture CDN Cache, how long after the new upload image, updated? Reply content: Website Picture CDN Cache, how long after the new upload image, updated? The common practice is to add a version number at the end of a file when you

Typecho How to call picture display quantity?

next()): ?> permalink() ?>"> permalink() ?>">content); ?>" /> This is called the code, the first page only shows 5, I

JavaScript-How do I get blogs from other users of Weibo?

Egg ache, 2013 after the microblogging API interface upgrade Interface: Https://api.weibo.com/2/statuses/user_timeline.json The parameter UID and screen_name can only be used by the currently authorized user. Which means you can't get someone else's

Enter question answer how is it safer to view content?

, there is a form, the need is to answer the question correctly to view the content, in a certain time, such as 1 days to revisit without answering questions, ask you what is generally feasible way? The current practice is: The answer is correct,

Mysql-thinkphp Associated Model Association operation requires table support transactions Ah, my table is MyISAM type that's not going to work?

Thinkphp Associated Model Association operation requires table support transactions Ah, my table is MyISAM type that's not going to work? How many people are using InnoDB now? Reply content: Thinkphp Associated Model Association operation

Doubts about the dependency between classes

Question one: Usually in the design of the class when you often encounter the following situations, class A depends on Class B, and Class B is dependent on Class A, which will cause a cyclic dependency.If there is a cyclic dependency in the class,

The public folder of the Laravel framework in Mac is inaccessible?

Mac environment, with the installation package directly decorate the laravel, through the browser access to the Laravel folder, you can display the file list, but the browser does not display the public folder, the address bar directly enter the

Thinkphp Association model Many-to-many inserts how to use?????

$u = D('user'); $u->name = 'xiak'; $u->password = 'qqqqqq'; $u->shop = array( 'gg' => '1', ); $u->relation(true)->add($data); user(id, name)shop(id, name)user_shop(user_id,shop_id) class

How do I use PDO in class?

How do I use PDO in class? '''$pdo = new PDO (); Class a{function A () { $pdo->query(); }Function B () { $pdo->exec();} }''' So, what is the use of A and B methods in Class A? Reply content: How do I use PDO in class? '''$pdo = new PDO

Seen in the dark clouds, a thread concurrency vulnerability, someone would like to tell the principle and repair solutions?

Seen in the dark clouds, a thread concurrency vulnerability, someone would like to tell the principle and repair solutions? http://www.wooyun.org/bugs/wooyun-2010-0102881 Instead, the data information is not locked in a timely manner when the

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