xkcd-password-wordpress.php

xkcd-password.php

<?php
/*
 * Generate xkcd style password from /usr/share/dict/words
 *
 * http://xkcd.com/936/
 * apt-get install wamerican
 */
if (!function_exists('wp_generate_password')) :
    $filesize = @filesize('/usr/share/dict/words');
    if ($filesize !== false):
        /**
         * Generates a random password drawn from the defined set of characters.
         *
         * @since 2.5.0
         *
         * @param int $length Optional. The length of password to generate. Default 12.
         * @param bool $special_chars Optional. Whether to include standard special characters.
         *                                  Default true.
         * @param bool $extra_special_chars Optional. Whether to include other special characters.
         *                                  Used when generating secret keys and salts. Default false.
         * @return string The random password.
         */
        function wp_generate_password($length = 12, $special_chars = true, $extra_special_chars = false)
        {
            $lines = file('/usr/share/dict/words', FILE_IGNORE_NEW_LINES);
            $length = count($lines);
            $pw = array();

            for ($i = 1; $i <= 4; $i++) {
                $plain = FALSE;

                while (!$plain) {
                    // Get random word from $lines
                    $key = mt_rand(0, $length);
                    if ((preg_match("/^[a-z]+$/", $lines[$key]) == 1) && (strlen($lines[$key]) < 9)) {
                        // String only contains a to z characters
                        $plain = TRUE;
                        $pw[] = $lines[$key];
                    }
                }
            }

            return implode('-', $pw);
        }
    endif;
endif;