What are some best practices for handling data returned by PHP methods in a clean and type-safe manner?

When dealing with data returned by PHP methods, it's important to handle it in a clean and type-safe manner to avoid potential errors or vulnerabilities. One way to achieve this is by using type hinting and checking the data type before further processing it. 

// Example of handling data returned by a PHP method in a clean and type-safe manner

// Define a function with type hinting to ensure the returned data is of the expected type
function getData(): array {
    // Simulate data retrieval
    $data = [1, 2, 3];
    
    return $data;
}

// Call the function and check the data type before processing
$data = getData();

if (is_array($data)) {
    // Process the data further
    foreach ($data as $item) {
        echo $item . PHP_EOL;
    }
} else {
    // Handle the case where the returned data is not of the expected type
    echo "Invalid data type returned.";
}

Keywords

data handling type safety PHP methods clean code error handling

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