How can PHP code be structured to ensure type-safe comparisons in input field validation?

To ensure type-safe comparisons in input field validation in PHP, you can use the "===" operator instead of "==" when comparing user input against expected values. This ensures that both the value and the data type are the same, reducing the risk of unexpected behavior due to type coercion. 

$userInput = $_POST['input_field'];

// Type-safe comparison to check if user input is equal to a specific value
if ($userInput === 'expected_value') {
    // input is valid
} else {
    // input is not valid
}

Keywords

PHP type-safe comparisons input field validation data types strict comparison

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