What alternative approach is suggested in the forum thread for checking the modification time of an XML file with a "Generation Stamp"?

The issue is checking the modification time of an XML file efficiently without relying on the file system's last modified time. One alternative approach suggested in the forum thread is to use a "Generation Stamp" within the XML file itself. This involves adding a timestamp or version number within the XML file that gets updated whenever the file is modified. By checking this stamp instead of the file's modification time, you can accurately determine if the XML file has been modified. 

// Read the XML file and extract the Generation Stamp
$xml = simplexml_load_file('example.xml');
$generationStamp = (string) $xml->generationStamp;

// Check if the Generation Stamp has been updated
if ($generationStamp !== $_SESSION['lastGenerationStamp']) {
    // XML file has been modified, perform necessary actions
    $_SESSION['lastGenerationStamp'] = $generationStamp;
    echo 'XML file has been modified.';
} else {
    echo 'XML file has not been modified.';
}

Keywords

XML file Generation Stamp modification time alternative approach PHP functions

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