PHP中的随机字符串[重复]

Question

您好，我想在 php 中生成带有重复的随机字符串，例如 Ag7hlA。有什么办法吗？我正在尝试这个

<?php
function random_string($length)
{
    $length = (int) $length;
    if ($length < 1) return '';

    $base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz123456789";
    $max = strlen($base) - 1;

    $string = '';    
    while ($len--)
    {
        $string = $base[mt_rand(0, $max)];
    }
    return $string;
}    
?>

但是没有生成随机字符串

Answer 1

function generateRandomString($length = 10) {
    $char = 'abcdefghijklmnopqrstuvwxyz';
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $char[rand(0, strlen($char) - 1)];
    }
    return $randomString;
}

如果你也想添加数字，那么$char 将是--->

$char = 'abcdefghijklmnopqrstuvwxyz1234567890';

如果是大写案件--->

$char = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';