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- laravel query writes multiple conditions
- In Laravel, we often need to query based on multiple conditions. These conditions may include field values, time ranges, relationships, and more. In this article, we will discuss how to use Laravel Eloquent for multi-condition query. 1. Basic query When querying in Laravel, we can use basic query methods, such as `where`, `orWhere`, `whereIn`, `whereNotIn`, etc. These query methods can be chained to combine multiple query conditions
- Laravel 1293 2023-05-20 13:21:08
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- Why is laravel slow?
- Laravel is a popular PHP development framework popular for its elegant and simple syntax, powerful extension capabilities, and many available Laravel plugins. Although Laravel is an excellent framework, performance issues can arise in certain situations. This article will explore why Laravel slows down and how to fix these issues. Why Laravel becomes slow 1. Code execution process The execution process of the Laravel framework may be very complex. Due to the huge number of data in the framework,
- Laravel 727 2023-05-20 13:20:39
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- How to run laravel project
- Laravel Project is a very popular PHP framework that simplifies development tasks and provides many useful features and tools. If you are developing with Laravel, then you need to know how to run your project for testing and deployment. Here are the steps to run a Laravel project: 1. Install Laravel If you don’t have Laravel installed yet, then you need to install it first. You can install it from the official website https://laravel.com/docs/8.x/install
- Laravel 1877 2023-05-20 13:15:38
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- How to determine null value in laravel
- In Laravel development, we often need to determine whether a variable is empty. In PHP, we usually use the empty() and isset() functions to determine whether it is empty, but in Laravel, there is a more convenient way to handle null value determination. The following will introduce some common methods for judging null values in Laravel. 1. Use null In Laravel, you can use null to indicate that a variable is empty. If the value of a variable is null, it means that it has not been assigned a value or has been explicitly assigned a value of null. For example,
- Laravel 1279 2023-05-20 12:41:38
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- Annotate routing in laravel
- Annotating routes is a common technique in Laravel development. Annotation routing can make the code clearer and easier to understand, making it easier to maintain and develop the code. The following will introduce in detail how to annotate routes in Laravel. 1. What is Laravel routing? In Laravel, routing refers to a mechanism that connects URLs and application logic. It will map HTTP requests to specific methods of the controller. When the user enters a URL in the browser, Laravel will match the route based on the beginning of the URL and find the corresponding controller method.
- Laravel 830 2023-05-20 12:36:37
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- Explain the situation when Laravel output is not filtered
- Laravel is an extremely popular PHP framework that helps developers build applications faster. In a web application, processing and outputting user input is crucial, but when outputting user input, great care must be taken to avoid security holes. This article will explain the situation where Laravel output is not filtered and how to solve this problem. ## What is Laravel output without filtering? In Laravel applications, we usually use the `echo` statement or `{{ }}` syntax to output
- Laravel 782 2023-04-25 11:13:11
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- Explore the reasons and solutions for access denied by Laravel
- Laravel is a very popular PHP framework, but during use, you sometimes encounter problems with access being denied, such as a 403 Forbidden error. So, what is the reason for this situation? This article will delve into the reasons why Laravel denies access and provide corresponding solutions. 1. Insufficient Permissions The first possible reason why Laravel denies access is insufficient permissions, which is usually caused by improper server settings or code security issues. For example, insufficient permissions may exist in the following situations:
- Laravel 2039 2023-04-23 17:10:52
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- How to build someone else's Laravel source code
- Build other people's Laravel source code In today's technology field, Laravel, as an open source PHP web application framework, has been widely used around the world. Many Laravel developers and teams have made their code bases open source for other developers to learn and refer to, making it easier and more convenient to share and use code. However, for beginners, it may be difficult to build other people's Laravel source code. So, this article will introduce step by step how to build other people’s Laravel
- Laravel 931 2023-04-23 17:12:04
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- How to solve the problem that laravel's built-in email cannot be verified?
- Laravel is a popular PHP development framework that provides rich functionality, including a reliable authentication and authorization system. Among them, the built-in email verification function is a very useful feature that can help website administrators and users ensure security and privacy. However, sometimes users may face a problem: Laravel's own email verification cannot complete the verification. This article will explore what may be causing this problem and provide solutions. Generally, Laravel's built-in email verification should work just fine. When a user registers and enters his
- Laravel 2169 2023-04-23 17:13:48
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- How to add automatic data deletion function in laravel
- With the continuous development of Internet applications, Web development frameworks are also emerging in endlessly. Among them, Laravel is one of the most popular PHP development frameworks and is widely used in all walks of life. This article will introduce how to add automatic data deletion function in Laravel. 1. Problem background When developing web applications, we may need to regularly delete some useless data to free up space and improve system efficiency. For example, we need to delete user registrations but not activated accounts after a certain time range, or delete some expired session information, etc. For this kind of determination
- Laravel 948 2023-04-23 15:57:53
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- Which one is better, laravel or flask?
- As the Internet continues to develop and change, more and more developers are beginning to pay attention to framework selection for web development. Among the many frameworks, Laravel and Flask are two highly respected frameworks. So, which one is better, Laravel or Flask? This article will conduct a comparative analysis from the following aspects. 1. Overview Laravel is a web application framework written in PHP. It uses simple and elegant syntax to help developers quickly build high-quality web applications. Laravel is currently the most popular P
- Laravel 1037 2023-04-23 15:07:15
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- Laravel's common error codes and their definitions
- Laravel is a popular PHP framework that provides developers with a wealth of features and tools to create efficient, secure, and reliable web applications. When developing Laravel applications, errors and exceptions are inevitable. In order to better manage these errors and exceptions, Laravel provides a set of error code definitions, which help developers better organize and handle errors, thereby improving the reliability and maintainability of applications. The following are Laravel’s common error codes and their definitions: 1. 1xx error code: information error
- Laravel 1547 2023-04-23 10:32:51
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- How to use Laravel to implement page jump in the backend management system
- Laravel is a commonly used PHP web application framework that is widely used to build the backend of projects. When we use Laravel to build a backend management system, it will inevitably involve the problem of jumping between pages. Because Laravel uses the MVC design pattern, its routing and controllers are key components for page jumps. In this article, we will introduce step by step how to use Laravel's routing function and controller to implement page jumps in the background management system. 1. Laravel routing in Larav
- Laravel 1247 2023-04-23 10:32:12
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- How to query connected tables in laravel
- Laravel is a popular PHP framework that provides an elegant way to build web applications and APIs. In the process of building applications, it is often necessary to perform related queries between tables in order to obtain more data information. This article will focus on how to use Laravel to perform join table queries. 1. Basic model classes In Laravel, each relationship is established through methods between related models. We need to define relationship methods in the model class. The following example shows how to use the model class
- Laravel 1595 2023-04-23 10:31:09
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- What to do if there is an error when adding fields in laravel
- Laravel is a popular web development framework that makes it easy to build efficient and secure applications. However, even using Laravel, we may still encounter some problems. One of them is an error while adding a field. In this article, we will discuss what may cause this error and how to fix it. 1. Possible reasons 1. Syntax error When adding a new field, we need to execute a SQL statement in the database. This error occurs if there are syntax errors in the SQL statement. In Laravel we can
- Laravel 936 2023-04-23 10:29:38
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