What potential issue is the user trying to address by checking for duplicate entries in the flatfile?

The potential issue the user is trying to address by checking for duplicate entries in the flatfile is data integrity. Duplicate entries can cause inaccuracies in reporting, lead to confusion, and impact the overall functionality of the system. By checking for and preventing duplicate entries, the user can ensure that the data in the flatfile remains accurate and reliable. 

// Read the contents of the flatfile into an array
$data = file('data.txt', FILE_IGNORE_NEW_LINES);

// Check for duplicate entries
if(in_array($newEntry, $data)){
    echo "Duplicate entry found!";
} else {
    // Add the new entry to the flatfile
    file_put_contents('data.txt', $newEntry . PHP_EOL, FILE_APPEND);
    echo "Entry added successfully!";
}

Keywords

flatfile duplicate entries checking PHP potential issue

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