Validate a crypt setting string

# crypt_checksalt

(PECL xpass >= 1.1.0)

crypt_checksalt — Validate a crypt setting string

### Beschreibung

function crypt_checksalt(string `$salt`): ?string

Checks the salt string against the system configuration and reports whether the hashing method and parameters it specifies are acceptable. It is intended to be used to determine whether the user's passphrase should be re-hashed using the currently preferred hashing method.

### Parameter-Liste

`salt`
  Salt string to check.

### Rückgabewerte

Returns one of the `CRYPT_SALT_*` as an int.

### Beispiele

Beispiel #1 A crypt_checksalt() example

    <?php
    // Generate a salt for a legacy method
    $salt = crypt_gensalt(CRYPT_PREFIX_STD_DES);
    // Check the salt
    $test = crypt_checksalt($salt);
    var_dump($test === CRYPT_SALT_METHOD_LEGACY);

    // Generate a salt for default method
    $salt = crypt_gensalt();
    // Check the salt
    $test = crypt_checksalt($salt);
    var_dump($test === CRYPT_SALT_OK);
    ?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

    bool(true)
    bool(true)

### Siehe auch

- crypt_gensalt() - Compile a string for use as the salt argument to crypt

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