webman/app/Utils/Random.php

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2025-02-16 00:28:13 +08:00
<?php
namespace App\Utils;
/**
* 随机生成类
*/
class Random
{
/**
* 生成随机字符串,数字,大小写字母随机组合
*
* @param int $length 长度
* @param int $type 类型1 纯数字2 纯小写字母3 纯大写字母4 数字和小写字母5 数字和大写字母6 大小写字母7 数字和大小写字母
*/
public static function str_random($length = 6, $type = 1)
{
// 取字符集数组
$number = range(0, 9);
$lowerLetter = range('a', 'z');
$upperLetter = range('A', 'Z');
// 根据type合并字符集
if ($type == 1) {
$charset = $number;
} elseif ($type == 2) {
$charset = $lowerLetter;
} elseif ($type == 3) {
$charset = $upperLetter;
} elseif ($type == 4) {
$charset = array_merge($number, $lowerLetter);
} elseif ($type == 5) {
$charset = array_merge($number, $upperLetter);
} elseif ($type == 6) {
$charset = array_merge($lowerLetter, $upperLetter);
} elseif ($type == 7) {
$charset = array_merge($number, $lowerLetter, $upperLetter);
} else {
$charset = $number;
}
$str = '';
// 生成字符串
for ($i = 0; $i < $length; $i++) {
$str .= $charset[mt_rand(0, count($charset) - 1)];
// 验证规则
if ($type == 4 && strlen($str) >= 2) {
if (!preg_match('/\d+/', $str) || !preg_match('/[a-z]+/', $str)) {
$str = substr($str, 0, -1);
$i = $i - 1;
}
}
if ($type == 5 && strlen($str) >= 2) {
if (!preg_match('/\d+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -1);
$i = $i - 1;
}
}
if ($type == 6 && strlen($str) >= 2) {
if (!preg_match('/[a-z]+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -1);
$i = $i - 1;
}
}
if ($type == 7 && strlen($str) >= 3) {
if (!preg_match('/\d+/', $str) || !preg_match('/[a-z]+/', $str) || !preg_match('/[A-Z]+/', $str)) {
$str = substr($str, 0, -2);
$i = $i - 2;
}
}
}
return $str;
}
}