What function in PHP can be used to determine if a dataset has been changed and return a true value?

To determine if a dataset has been changed in PHP, you can use the `md5()` function to generate a hash of the dataset and compare it with a previously stored hash. If the hashes are different, it means the dataset has been changed. 

// Sample dataset
$dataset = ['apple', 'banana', 'cherry'];

// Generate hash of the dataset
$dataset_hash = md5(json_encode($dataset));

// Store the hash in a database or file

// Check if dataset has been changed
if ($dataset_hash !== $stored_hash) {
    echo "Dataset has been changed.";
} else {
    echo "Dataset has not been changed.";
}

Keywords

PHP function dataset changed true value

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