What considerations should be taken into account when encoding passwords using the crypt() function in PHP, especially for Apache authentication?

When encoding passwords using the crypt() function in PHP for Apache authentication, it is important to use a strong hashing algorithm such as SHA-256 or SHA-512. Additionally, it is crucial to generate a unique salt for each password to prevent rainbow table attacks. Finally, ensure that the hashed password is securely stored and transmitted. 

$password = "secret_password";
$salt = '$5$rounds=5000$' . substr(str_replace('+', '.', base64_encode(random_bytes(16))), 0, 16) . '$';
$hashed_password = crypt($password, $salt);

// Store $hashed_password securely

Keywords

crypt password encoding PHP Apache authentication security

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