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ランダムなパスワードを1行で生成する with openssl

Posted at

PHP 5.3 以上で openssl 拡張が必要。

その1

<?php
function random($n = 8)
{
    return substr(base_convert(bin2hex(openssl_random_pseudo_bytes($n)),16,36),0,$n);
}

その2

<?php
function random($n = 8)
{
    return strtr(substr(base64_encode(openssl_random_pseudo_bytes($n)),0,$n),'/+','_-');
}
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