PHP

This article mainly introduces the yii2 Database read/write splitting configuration example. Database read/write splitting is the first optimization step when the website encounters a performance bottleneck. if you are interested, please take a look.

Internationalization: because the word I and n have 18 letters, it is often abbreviated as I18N) refers to the process of designing an application, this kind of software can be adapted without major engineering changes... Internationalization:

The performance of network applications is affected by many factors. Database access, file system operations, network bandwidth, and so on are potential influencing factors. Yii has reduced the performance impact of the framework in various aspects.

The PHPprint_r method can print and display variables to make them easy to understand. If the variable is string, integer, or float, the variable value itself is printed. if the variable is array, the key and element are displayed in a certain

When images localhostsuploadnews201307211.jpg exist, the image is displayed. Otherwise, call createthumb. php to generate an image. Principle: set apache rewrite. when the image does not exist, call php to create the image. For example SOURCE image

Directory directory 1 interaction process 1.1 Handshake Authentication Phase 1.2 command execution phase 2 basic type 2.1 Integer value 2.2 String (ended with NULL) (Null-TerminatedString) 2.3 binary data (length encoding) (LengthCodedBinary) 2.4

In the thinkphp framework, we often use the state value judgment: but such writing will cause syntax errors. In the thinkphp framework, we often use the state value judgment: but such writing will cause syntax errors. Test 2.

Static member: a member in a static class is added with a static modifier, which is a static member. you can directly use the class name + static member name to access this static member. because the static member exists in the memory, non-static

Php udf & amp; array "; // Echo rand (); // echo time (); // time stamp // 2017-02-10 08: 46: 12date_default_timezone_set (" Asia/Shanghai "); // echo date ("Y-m-d h: I: s"); // The current time is converted by default. // echo date ("Y-m-d h: I:

Session injection is a problem similar to session exposure. This type of attack is based on the fact that your WEB server has read permission on the session storage directory and write permission. Therefore, you can write a section to allow other

Permanent login permanent login refers to the mechanism for continuous verification between browser sessions. In other words, users who have logged on today will still be logged on tomorrow, even if the user session between multiple accesses expires.

This article mainly introduces the ZendFramework method for creating ZF projects based on Command lines. it analyzes in detail the specific operation steps and precautions for using Command lines to create ZF projects, for more information about

In many cases, file name manipulation uses dynamic inclusion. in this case, the directory name or part of the file name is saved in a variable. For example, you can cache some of your dynamic pages to reduce the burden on your database server.

Session hijacking is the most common attack method against Sessions. It is a general term for all means that attackers can use to access others' sessions. The first step of all these means is to obtain a valid session identifier to

Cookie theft is a risk that the user's Cookie will be stolen by attackers. If the session id is stored in the cookie, the exposure of the cookie is a serious risk because it can cause... Cookie theft One risk arising from the use of cookies is that

The following small make up will bring you a phpstudy default does not support 64-bit php solution. I think this is quite good. now I will share it with you and give you a reference. Let's take a look at it with Xiaobian. Note: Phpstudy on

This article mainly introduces information about the communication between semaphores and shared memory in the basic knowledge of PHP process communication, if you have any need, you can refer to the next article, which mainly introduces the

Access permission exposure one of the main issues needing attention in database usage is the exposure of access permissions, that is, the username and password. For convenience in programming, a db. inc file is usually stored, for example, CODE :...

Cross-site scripting (XSS) attacks are common attacks. Web applications on all platforms are deeply affected, and PHP applications are no exception. All input applications face risks. Webmail... Cross-Site Scripting Cross-site scripting is one of

Filtering input filtering is the foundation of Web application security. It is the process of verifying data legitimacy. By filtering all the data during input, you can avoid being contaminated (unfiltered) data in... Filter input Filtering is the