How does PHP ZipArchive monitor the progress of files in compressed packages?

PHP ZipArchive class is a tool for creating, opening, decompressing and managing compressed archive files. When we need to process large compressed package files, we may encounter the need to monitor the progress of the files in the compressed package. In this article, we will introduce how to use the PHP ZipArchive class to monitor the progress of files in compressed packages.

First, we need to create an instance of ZipArchive and use the open method to open the compressed package file to be processed. Suppose we already have a compressed package file named "archive.zip". The example is as follows:

$zip = new ZipArchive;
if ($zip->open('archive.zip') === TRUE) {
    // 压缩包打开成功
} else {
    // 压缩包打开失败
}

Next, we need to get all the file names in the compressed package and create a unique Progress monitoring ID. We can use the getNameIndex method to get all the file names in the compressed package, and use the uniqid method to generate a unique progress monitoring ID. The example is as follows:

$fileCount = $zip->numFiles;
$progressIds = [];
for ($i = 0; $i < $fileCount; $i++) {
    $fileName = $zip->getNameIndex($i);
    $progressId = uniqid('progress_');
    $progressIds[$progressId] = $fileName;
}

Now, we have obtained the progress monitoring ID and file name of all files. , then we can process each file by looping through the progress monitoring ID. When processing each file, we can use the getFromName method to obtain the file content and update the progress monitoring information according to the processing progress. An example is as follows:

foreach ($progressIds as $progressId => $fileName) {
    $fileContent = $zip->getFromName($fileName);
    // 处理文件内容的代码
    
    // 更新进度监控信息
    $progress = calculateProgress($fileName);
    updateProgress($progressId, $progress);
}

In the example code, we assume that $fileName is the file name to be processed and $fileContent is the content of the file. In the code block that processes the file content, you can perform corresponding processing according to actual needs, such as decompressing the file, reading the file content, etc.

In the sample code, we use the calculateProgress method to calculate the progress of the current file processing, and use the updateProgress method to update the progress monitoring information. These two methods are customized and you can implement them according to actual needs. The way to update the progress monitoring information can be to store the progress in the database or display it in real time through other methods.

Finally, we need to close the ZipArchive instance to release resources. The example is as follows:

$zip->close();

Through the above steps, we can use the PHP ZipArchive class to monitor the progress of the files in the compressed package. You can make corresponding modifications and extensions according to your actual needs to meet different scenarios. Hope this article can help you!

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