PHP中的隨機字符串

Question

你好，我想在重複像Ag7hlA的PHP中生成隨機字符串。反正是有做我試圖此

<?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; 
}  
?> 

但沒有產生

Answer 1

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

隨機字符串，如果u想太多數字相加，比$char會--->

$char = 'abcdefghijklmnopqrstuvwxyz1234567890'; 

，如果死刑案件--->

$char = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';