


javascript - I only know php and js but not java, can I develop mobile applications?
There are php and js, and of course there are a series of related development foundations such as html, mysql, css, etc., as well as the foundation for building a Linux server.
But I don’t know anything about java (and I don’t want to learn it)
Can you develop mobile applications? ios or android.
I mainly have a need to implement a GTD-like tool, which can now be implemented on the web side.
But I want to make it into a mobile app and add the mobile reminder function, so that it can be like a GTD tool.
Can I just rely on js or other languages to implement this without a java foundation?
Reply content:
There are php and js, and of course there are a series of related development foundations such as html, mysql, css, etc., as well as the foundation for building a Linux server.
But I don’t know anything about java (and I don’t want to learn it)
Can you develop mobile applications? ios or android.
I mainly have a need to implement a GTD-like tool, which can now be implemented on the web side.
But I want to make it into a mobile app and add the mobile reminder function, so that it can be like a GTD tool.
Can I just rely on js or other languages to implement this without a java foundation?
react native
react native is waving to you
If you really knew js and PHP, you wouldn’t ask this question, haha
That’s totally fine, weex. angular+ionoic. React can be used
You can learn about appcan
It’s absolutely possible,
For example, you can
php provide api + amaze UI (page) + appcan or Hbuilder (tool) = app
A project I’m working on recently is an app made using the web. Because people who don’t have mobile development can only write apps using the web. The backend is django, and the front-end framework uses weui.
Two solutions.
The first type: Because I know a little bit about android and ios development, I found an open source tabbar on github, modified it, and then the relevant button pointed to the page that my website jumps to, and then used webview (UIWebView) directly in the main view part. show. This will be done more like an app.
Second method: Use packaging tools. I use crosswalk. Crosswalk can package an application into Android and iOS. The principle is almost to edit the crosswalk configuration file, which contains the configuration of the app homepage. Just point the homepage displayed when entering the app to the homepage of your website. But this requires you to write a web version of the tabbar yourself. I used weui to write a website similar to WeChat public account.
Brother meteor
(https://www.meteor.com/) is waving to you.
Yes, according to these things you know now, you can definitely make an app
Using NativeScript, you can use existing JavaScript and CSS technologies to write native mobile applications for iOS, Android and Windows Phone. The interface is rendered by the native platform's rendering engine rather than WebView, and because of this, the entire experience of using the application is native.
NativeScript allows you to code your application using cross-platform APIs, or if you need, you can use JavaScript to directly access all platform-specific native APIs.
Ionic should be mentioned. Pure JavaScript enables cross-platform application development. The same set of code can be used on both Android and iOS. You deserve it!
http://ionicframework.com/
You can use JS and PHP to develop Android/iOS mobile applications.
PHP is mainly used for server-side.
JS is based on Cordova to develop Android/iOS clients.
Cordova is based on WebView, so you can use traditional HTML/ CSS/JS to build applications.
There are many similar Hybrid App hybrid application development frameworks:
Overseas: Cordova (PhoneGap, Ionic), Titanium, Sencha Touch, Intel XDK, Xamarin
Domestic: AppCan, DCloud (MUI), APICloud (SuperWebview), WeX5
Finally, something interesting is that it is actually possible to run PHP on Android/iOS.
For example, the ARM version of the PHP interpreter I cross-compile and package on Ubuntu can run directly on Android and Raspberry Pi Raspbian.
Then I It is packaged into an APK called PHPDroid. First, start PHP's built-in HTTP server, and then open a WebView to access this service to achieve graphical interface interaction. An application called DraftCode on iOS has a similar principle when running PHP on iOS. Therefore, it is also feasible to develop applications with PHP on Android and iOS, although there are limitations.

The main advantages of using database storage sessions include persistence, scalability, and security. 1. Persistence: Even if the server restarts, the session data can remain unchanged. 2. Scalability: Applicable to distributed systems, ensuring that session data is synchronized between multiple servers. 3. Security: The database provides encrypted storage to protect sensitive information.

Implementing custom session processing in PHP can be done by implementing the SessionHandlerInterface interface. The specific steps include: 1) Creating a class that implements SessionHandlerInterface, such as CustomSessionHandler; 2) Rewriting methods in the interface (such as open, close, read, write, destroy, gc) to define the life cycle and storage method of session data; 3) Register a custom session processor in a PHP script and start the session. This allows data to be stored in media such as MySQL and Redis to improve performance, security and scalability.

SessionID is a mechanism used in web applications to track user session status. 1. It is a randomly generated string used to maintain user's identity information during multiple interactions between the user and the server. 2. The server generates and sends it to the client through cookies or URL parameters to help identify and associate these requests in multiple requests of the user. 3. Generation usually uses random algorithms to ensure uniqueness and unpredictability. 4. In actual development, in-memory databases such as Redis can be used to store session data to improve performance and security.

Managing sessions in stateless environments such as APIs can be achieved by using JWT or cookies. 1. JWT is suitable for statelessness and scalability, but it is large in size when it comes to big data. 2.Cookies are more traditional and easy to implement, but they need to be configured with caution to ensure security.

To protect the application from session-related XSS attacks, the following measures are required: 1. Set the HttpOnly and Secure flags to protect the session cookies. 2. Export codes for all user inputs. 3. Implement content security policy (CSP) to limit script sources. Through these policies, session-related XSS attacks can be effectively protected and user data can be ensured.

Methods to optimize PHP session performance include: 1. Delay session start, 2. Use database to store sessions, 3. Compress session data, 4. Manage session life cycle, and 5. Implement session sharing. These strategies can significantly improve the efficiency of applications in high concurrency environments.

Thesession.gc_maxlifetimesettinginPHPdeterminesthelifespanofsessiondata,setinseconds.1)It'sconfiguredinphp.iniorviaini_set().2)Abalanceisneededtoavoidperformanceissuesandunexpectedlogouts.3)PHP'sgarbagecollectionisprobabilistic,influencedbygc_probabi

In PHP, you can use the session_name() function to configure the session name. The specific steps are as follows: 1. Use the session_name() function to set the session name, such as session_name("my_session"). 2. After setting the session name, call session_start() to start the session. Configuring session names can avoid session data conflicts between multiple applications and enhance security, but pay attention to the uniqueness, security, length and setting timing of session names.


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