我先说一下我想实现的功能吧,就是同时上传很多张图片,并且每张图片都有其对应的页码。然后我想把图片的url和页码对应保存在数据库中。主要问题是如何把每张图片对应的页码也传过去。我是用表单上传的,而且每次上传时图片数量也不确定,所以不能把表单写死。我也想过用js动态添加表单,但php端又该怎么接收呢。求教。
我会的语言php html js(不是很懂)
回复内容:
我先说一下我想实现的功能吧,就是同时上传很多张图片,并且每张图片都有其对应的页码。然后我想把图片的url和页码对应保存在数据库中。主要问题是如何把每张图片对应的页码也传过去。我是用表单上传的,而且每次上传时图片数量也不确定,所以不能把表单写死。我也想过用js动态添加表单,但php端又该怎么接收呢。求教。
我会的语言php html js(不是很懂)
动态添加上传input时,跟着动态跟着一个隐藏的input。最终思想就是,页数和图片可以绑定上就能解决
i是递增的
你把每个图片看作是一个对象,整个表单就是对象的集合,链表或是数组或其他,图片在添加的时候写个自动上传功能,那么你图片去入库的时候,就是foreach(List)

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.

Fibers was introduced in PHP8.1, improving concurrent processing capabilities. 1) Fibers is a lightweight concurrency model similar to coroutines. 2) They allow developers to manually control the execution flow of tasks and are suitable for handling I/O-intensive tasks. 3) Using Fibers can write more efficient and responsive code.

The PHP community provides rich resources and support to help developers grow. 1) Resources include official documentation, tutorials, blogs and open source projects such as Laravel and Symfony. 2) Support can be obtained through StackOverflow, Reddit and Slack channels. 3) Development trends can be learned by following RFC. 4) Integration into the community can be achieved through active participation, contribution to code and learning sharing.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.


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