What are some best practices for handling passwords with special characters like umlauts in PHP?

Special characters like umlauts can cause issues when handling passwords in PHP due to encoding differences. To handle passwords with special characters like umlauts properly, it is recommended to use UTF-8 encoding throughout the process, from input to storage and retrieval. 

// Set UTF-8 encoding for PHP
mb_internal_encoding("UTF-8");

// Example of handling a password with umlauts
$password = "Passwörd123";

// Hash the password using password_hash
$hashedPassword = password_hash($password, PASSWORD_DEFAULT);

// Verify the password using password_verify
$isValidPassword = password_verify($password, $hashedPassword);

if ($isValidPassword) {
    echo "Password is valid.";
} else {
    echo "Invalid password.";
}

Keywords

passwords special characters umlauts PHP handling

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