Are there any potential pitfalls or limitations when uploading large files in segments and reassembling them on the server with PHP?

When uploading large files in segments and reassembling them on the server with PHP, one potential pitfall is the risk of data corruption if the segments are not uploaded or reassembled correctly. To mitigate this risk, you can use a checksum or hash function to verify the integrity of the file segments before reassembling them. This can help ensure that the file is uploaded and reassembled accurately. 

// Calculate checksum of each file segment before reassembling
$checksum = md5_file($segmentFilePath);

// Verify checksum before reassembling
if ($checksum === $expectedChecksum) {
    // Reassemble file segments
    // Your reassembly logic here
} else {
    // Handle checksum verification failure
    echo 'Checksum verification failed. Please try uploading the file segments again.';
}

Keywords

file upload large files segmentation reassembly server-side processing

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