International PHP Conference Berlin 2025

crypt_checksalt

(PECL xpass >= 1.1.0)

crypt_checksaltValidate a crypt setting string

Beschreibung

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 an int, one of CRYPT_SALT_* constant, see the Xpass constants page.

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

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