How to Refresh PHP Page with Data for Progress Updates скачать в хорошем качестве

How to Refresh PHP Page with Data for Progress Updates

Learn how to refresh a PHP page while passing data to keep track of progress in long-running operations. --- This video is based on the question https://stackoverflow.com/q/67358219/ asked by the user 'Mawg says reinstate Monica' ( https://stackoverflow.com/u/192910/ ) and on the answer https://stackoverflow.com/a/67358262/ provided by the user 'Dhruv Patil' ( https://stackoverflow.com/u/8581230/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Refresh PHP Page passing some data Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Refresh PHP Page with Data for Progress Updates In web development, there are instances when you may need to perform a long-running operation that cannot be completed instantly. This might include tasks such as processing a large dataset or performing time-consuming calculations. One common requirement is to give users a way to view their progress without stopping the entire operation or making them wait indefinitely. In this guide, we'll explore how to refresh a PHP page while passing along data related to the operation's progress. The Problem: Maintaining Progress State Imagine you have a script that processes records and you want to periodically update the user on how many records have been processed. Your goal is to: Show a message like processed X records in Y seconds Automatically reload the page after a specific number of records (Z) However, if you've ever tried using the header("Refresh:0"); method after updating a variable with $_POST, you know that the $_POST data is lost on refresh. This leads to a common frustration: how can we retain information across page refreshes? The Solution: Using PHP Sessions Instead of attempting to pass data via POST during a refresh, a much more efficient method is to utilize PHP sessions. Sessions allow you to store the progress information on the server side, enabling you to retrieve it even after the page reloads. Here’s how to implement this solution: Step 1: Start the Session At the very beginning of your PHP script, make sure you start the session. This allows you to store and retrieve values from the session easily. [[See Video to Reveal this Text or Code Snippet]] Step 2: Store Progress in Session Variables During your processing operation, you can store the number of records processed in a session variable. For example: [[See Video to Reveal this Text or Code Snippet]] Step 3: Display the Progress Now you can display the progress to the user. For example, you can show something like processed X records on your webpage: [[See Video to Reveal this Text or Code Snippet]] Step 4: Refresh the Page After processing a certain number of records, you can use the header("Refresh:5"); line to reload the page after 5 seconds or any duration you choose. This gives users time to read the progress message before the page refreshes. [[See Video to Reveal this Text or Code Snippet]] Step 5: Resetting the Session At the end of your processing, don’t forget to clean up by resetting or destroying the session, so the next time the operation starts, it begins fresh. [[See Video to Reveal this Text or Code Snippet]] Conclusion By using PHP sessions, you can efficiently maintain data across page reloads without losing important user progress information. This approach not only enhances the user experience by providing timely updates, but it also keeps your code clean and organized. Implementing this method allows you to break down long-running operations into manageable chunks while maintaining the ability to communicate progress effectively with users. Consider using this technique for your next PHP project where user feedback is essential!