Скачать или смотреть Improving ZipArchive::addGlob() Performance in PHP: How to Properly Manage Temporary Directories

Discover how to optimize the use of `ZipArchive::addGlob()` in PHP and avoid issues with temporary directories being deleted too early.
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Improving ZipArchive::addGlob() Performance in PHP

When working with CSV file generation and zipping processes in PHP, developers often face performance issues—especially when utilizing the ZipArchive::addGlob() method. One common problem arises when temporary directories are deleted before the zipping process is complete, leading to errors and incomplete zip files. In this post, we'll explore the reasons behind this issue and present effective solutions to enhance the performance of your code.

The Problem

In the provided code snippet, the developer is attempting to:

Generate CSV files in a temporary directory.

Call ZipArchive::addGlob() to add these files to a zip archive.

Remove the temporary directory containing the CSV files.

However, the problem arises because the directory removal function is called immediately after addGlob(), which may lead to premature deletion of the temporary directory before all files have been zipped. This can cause incomplete zip files and errors in your application.

Analyzing the Code

Here’s a breakdown of the relevant code snippet:

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

Key Issues Identified

Missing ZipArchive::close(): After adding files to the zip archive, the close() method is not called. This absence can cause the PHP engine to consider the zip operation as not fully completed. Consequently, the process may allow the deletion function to execute before the zipping finishes.

Possible Outcome

If removeCsvExportsDir($campaign_id) is executed before the archiving finishes, it may lead to a situation where files are deleted while still being processed, resulting in a failed zip creation or an incomplete zip file.

Solution

Properly Closing the Zip Archive

To resolve this issue, you need to ensure that the ZipArchive is properly closed after adding the files. Here’s the revised version of the function:

[[See Video to Reveal this Text or Code Snippet]]

Adjusting the Workflow

Once you include the close() method, the zipping process will complete before the deletion function is called. Ensure that you adjust the function calls like this to improve reliability:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

In summary, to optimize the performance of ZipArchive::addGlob() and prevent early deletion of temporary directories in PHP, always remember to close the zip archive after adding files. Adhering to this practice not only prevents potential errors but also ensures that your application runs smoothly and efficiently. By taking these steps, you can enhance your code’s robustness and improve performance when generating zip files from CSV data.