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- How to use the m method in thinkphp
- The m method in thinkphp is the abbreviation of Model method. Model is the implementation of data in an application. It is usually used to operate the database and persist data into the database. In the thinkphp framework, the Model class provides methods for operating the database, which can quickly and easily complete operations such as additions, deletions, modifications, and searches. Using the m method of thinkphp, you can easily operate the Model class and read and write the database. The basic syntax of the m method is: $model=M('table'); where 'table' is the name of the table in the database, which can be a string or a variable. The M method has multiple parameters, the first parameter is a number
- ThinkPHP 1151 2023-05-28 17:13:31
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- What are the reasons for upgrading thinkphp3 to thinkphp5?
- 1. New functions and advantages ThinkPHP5 has significantly improved new functions and performance advantages compared to ThinkPHP3. The most obvious one is that the core of the framework adopts a more advanced namespace management mechanism, which can greatly improve the readability and maintainability of the code. In terms of performance advantages, ThinkPHP5 supports more efficient file caching and static caching, which greatly improves the system's response speed. In addition, ThinkPHP5 also introduces modular development based on Composer, which supports more flexible module definition and module calling, which can well meet the needs of large projects. 2. Blog System Case Below we take the blog system as an example to compare ThinkPHP3
- ThinkPHP 778 2023-05-28 15:47:29
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- How to refresh the page in thinkphp
- 1. The basic meaning of page refresh In the process of website development, page refresh refers to reloading the page based on the current page. After refreshing, re-obtain the data and update the page display. Page refresh is generally divided into two categories: front-end refresh and back-end refresh. Front-end refresh generally implements automatic or manual page refresh, which can be achieved using front-end technologies such as JavaScript, HTML, and CSS. The back-end refresh is generally completed on the server side, which requires writing back-end scripts or using ajax and other technologies. 2. Implementation method of front-end refresh in thinkphp It is quite simple to implement front-end refresh in thinkphp. Partial refresh can be achieved using jQuery's load() method. $(do
- ThinkPHP 1981 2023-05-28 14:22:47
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- How to write thinkphp admin
- thinkphpadmin is written as "
- ThinkPHP 1087 2023-05-28 14:16:23
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- How to implement distributed application system in ThinkPHP
- 1. What is a distributed application system? A distributed application system refers to an application system composed of multiple machines. Each machine in the system has its own resources and availability level. Different machines can expand the resource capacity of the system, and can also improve the system's availability and ability to cope with high traffic, thereby ensuring the scalability and stability of the system. 2. How to implement database sub-database and sub-table in a distributed application system. Database sub-database and sub-table are an important method to implement a distributed application system. Usually a database is divided into multiple independent databases, each database has its own data table structure, data index, storage allocation, etc. In this way, system data can be stored through databases distributed on multiple machines to improve system concurrency.
- ThinkPHP 789 2023-05-28 13:17:29
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- How to use query method in ThinkPHP5
- 1. How to use the query sum In ThinkPHP5, the query sum can be achieved by using the query and sum methods. Among them, the query method is used to construct a SQL statement, and the sum method is used to execute the SQL statement and retrieve the sum in the query result. Specifically, the query sum is used as follows: //Import the namespace usethink\Db;//Construct the SQL statement $result=Db::query('SELECTSUM(column_name)AStotalFROMtable_name');//Get out the query results and $sum=$result[0][&
- ThinkPHP 1600 2023-05-28 12:46:40
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- How to add layui to thinkphp5 to implement image upload function
- Many forms on the website will be used to upload pictures, logos, photos, and users will also upload pictures. At this time, the website needs a function to upload pictures, and after uploading, it is hoped that you can preview it to see if it is uploaded correctly. thinkphp5 adds layui to implement the image upload function (with image preview), asynchronously transmits the image and previews it, returns the asynchronously uploaded value to the hidden field of the form and then submits it. 1. Import the file. First, you need to import the jQuery file. This is necessary. 2. HTML part: Upload images.
- ThinkPHP 1425 2023-05-28 11:13:06
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- What is the reason why thinkphp Apache routing cannot be accessed and how to solve it
- 1. Cause Analysis In the process of using ThinkPHP to develop websites, we often use the routing function. Routing is divided into two methods: static routing and dynamic routing, and Apache routing is a type of dynamic routing. When we use Apache routing, sometimes we encounter inaccessibility. There are many reasons for this situation. Here are some of the main reasons: Rule definition errors When using the routing function, we need to define routing rules. If the rules are incorrectly defined, the route will become inaccessible. For example, if a parameter is omitted when defining a rule, or if the parameter is written incorrectly, Apache routing cannot be accessed normally. .htaccess file configuration problem.htaccess file is
- ThinkPHP 1823 2023-05-28 09:37:45
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- How to use thinkphp framework to implement login function
- Step 1: Create a login page First, you need to create a login page, which should contain username and password fields and a "Login" button. The page should be built using HTML and Bootstrap and defined in the view path. Here is an example: LoginLoginUsername:
- ThinkPHP 1567 2023-05-27 22:51:57
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- How to clear special characters in thinkphp
- 1. Use PHP built-in functions PHP provides many functions to operate on strings, such as str_replace, preg_replace, etc. We can use them to remove some common special characters. For example, we can use the following code to clear single quotes and double quotes entered by the user: $str=$_POST['input'];$str=str_replace(array("'","\""),'',$str ); In the above code, we first get
- ThinkPHP 1364 2023-05-27 22:43:13
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- What is the method for implementing paging function in thinkphp
- 1. Principles of paging Before introducing the paging function of ThinkPHP, let us first understand the basic principles of paging. The content on the website is rich and colorful, but for content with a large amount of data, if it is placed on one page, the page will load slowly, affecting the user experience, and it will also increase the difficulty of data management. Therefore, paging has become a common method to solve this problem. The principle of paging is to divide the data into several pages by displaying several items on one page, and each page displays a fixed amount of data. Paging is usually divided into two methods: one is SQL-based paging, and the other is array-based paging. 2. SQL-based paging In ThinkPHP, paging is based on SQL statement implementation.
- ThinkPHP 1312 2023-05-27 22:29:20
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- How to delete categories in thinkphp
- First, we need to understand the role of classification in the website. In many websites, classification is a very important concept. For example, on an e-commerce website, we need to divide products into different categories (such as clothing, home furnishings, digital, etc.) to facilitate users to find and purchase. In news websites, we also need to divide news into different categories (such as domestic, international, entertainment, sports, etc.) to facilitate user reading. Therefore, the importance of classification is self-evident. However, when classification changes, we need to operate on it. In a website developed using ThinkPHP, we can use the Model class provided by it to perform deletion operations. Below, we will use a simple example to illustrate how to delete a category
- ThinkPHP 1102 2023-05-27 21:19:58
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- How thinkphp returns certain pieces of data
- 1. Demand scenarios for returning certain pieces of data In web development, we often encounter the need to return certain pieces of data. For example, in the "Popular Articles" module of a website, it is necessary to return only the five articles with the highest recent visits; or in the "Sales Ranking" module of an e-commerce website, it is necessary to return only the top ten product information. . 2. Introduction to ThinkPHP query statements Before learning how to return certain pieces of data, let's first understand the query statements in ThinkPHP. ThinkPHP uses chain operations (also called Fluent interface) to build SQL query statements. The following are some common query operation functions: table(): Specify the query table name field
- ThinkPHP 1101 2023-05-27 21:02:33
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- How to set the permissions of the ThinkPHP project team
- 1. Understand ThinkPHP permission settings Permission setting refers to assigning operation permissions to users so that they can operate according to the permission scope. In the ThinkPHP framework, permission settings can be implemented through RBAC (Role-BasedAccessControl, role-based access control). RBAC role-based access control refers to an access control model that assigns roles to users and reassigns permissions to the roles. RBAC has the following characteristics: it authorizes permissions to roles, and then assigns roles to users, which facilitates management; users only need to have roles to have all the permissions owned by the roles; the system is easy to expand and maintain, and has good scalability; implementation permission
- ThinkPHP 1189 2023-05-27 20:55:26
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- How to set thinkphp website path
- 1. What is the network path? The network path refers to the virtual path on the Web server, which is different from the file system path. When setting the network path, we need to consider the current system's environment variables, operating system and other factors to ensure the correctness of the program's operation. 2. The role of the network path The network path plays an important role in the ThinkPHP framework. We can implement access control to web applications, website data management and other functions by setting the network path. 3. How to set the ThinkPHP website path 1. The first method is to add the following code in the config.php file: 'domain'=>['www.
- ThinkPHP 1643 2023-05-27 18:46:28
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