生成随机密码

generate_password.php

<?php


/**
 * Generate Password
 */
function generate_password($len)
{
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*.?";
    $max = strlen($chars) - 1;

    $pw = '';

    for ($i = 0; $i < $len; $i++) {
        $r = random_int(0, $max);
        $pw .= $chars[$r];
    }

    return $pw;
}

if (!empty($argv[1])) {
    $len = $argv[1];
} else {
    $len = 20;
}

$pw = generate_password($len);
echo "password: $pw" . PHP_EOL;