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    crypt_gensalt

    (PECL xpass >= 1.1.0)

    crypt_gensalt — Compile a string for use as the salt argument to crypt

    説明

    crypt_gensalt(string $prefix = null, int $count = 0): ?string

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

    パラメータ

    prefix
    Hashing method. One of the CRYPT_PREFIX_* constant. If null, the best available hashing method will be selected.
    count
    Controls the processing cost of the hash; the valid range and exact meaning of count depend on the hashing method, but larger numbers correspond to more costly hashes in terms of CPU time and possibly memory usage. If count is 0, a low default cost will be selected.

    戻り値

    Returns a string with the setting, or null in case of an error.

    例

    例1 A crypt_gensalt() example

    <?php
    // Generate the salt
    $salt = crypt_gensalt(CRYPT_PREFIX_BLOWFISH);
    // Hash the password
    $hash = crypt("secret", $salt);
    // Check the hash
    $test = hash_equals(crypt("secret", $hash), $hash);
    var_dump($salt, $hash, $test);
    ?>

    上の例の出力は以下となります。

    string(29) "$2y$05$GcPykP.Am8C1.dGamdpwW."
string(60) "$2y$05$GcPykP.Am8C1.dGamdpwW.1RR.7uicWvJPZfJfCEizZHqVWwuaJLm"
bool(true)

    参考

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