php generates passwords of specified length and strength

This article introduces an example code that uses PHP to generate a password of specified length and strength. Friends in need can refer to it.

The following code can generate user passwords of specified length, and can also set the password strength, including passwords composed of lowercase letters, uppercase and lowercase letters, uppercase and lowercase letters and numeric passwords, uppercase and lowercase letters and numbers, special symbols, etc.

Code:

<?php
/**
* 函数：generateRandpassword
* 参数：$size 密码长度 $power密码强度 
* 功能：生成密码的函数
* 编辑：bbs.it-home.org
*/
function generateRandpassword($size=9, $power=0) {
    $vowels = 'aeuy';
    $randconstant = 'bdghjmnpqrstvz';
    if ($power & 1) {
        $randconstant .= 'BDGHJLMNPQRSTVWXZ';
    }
    if ($power & 2) {
        $vowels .= "AEUY";
    }
    if ($power & 4) {
        $randconstant .= '23456789';
    }
    if ($power & 8) {
        $randconstant .= '@#$%';
    }

    $Randpassword = '';
    $alt = time() % 2;
    for ($i = 0; $i < $size; $i++) {
        if ($alt == 1) {
            $Randpassword .= $randconstant[(rand() % strlen($randconstant))];
            $alt = 0;
        } else {
            $Randpassword .= $vowels[(rand() % strlen($vowels))];
            $alt = 1;
        }
    }
    return $Randpassword;
}
?>