thinkphp random string-PHP Tutorial-php.cn

thinkphp random string

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Release： 2023-03-25 08:32:01

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This article mainly introduces thinkphp random strings, which has a certain reference value. Now I share it with everyone. Friends in need can refer to it

Provide two methods for your reference only

The first type:

//随机字符串
function get_rand_str($len){
    $str = "1234567890asdfghjklqwertyuiopzxcvbnmASDFGHJKLZXCVBNMPOIUYTREWQ";
    return substr(str_shuffle($str),0,$len);
}

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The second type:

/**
 * 随机字符
 * @param number $length 长度
 * @param string $type 类型
 * @param number $convert 转换大小写
 * @return string
 */
function random($length=6, $type=&#39;string&#39;, $convert=0){
    $config = array(
        &#39;number&#39;=>&#39;1234567890&#39;,
        &#39;letter&#39;=>&#39;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ&#39;,
        &#39;string&#39;=>&#39;abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ23456789&#39;,
        &#39;all&#39;=>&#39;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890&#39;
    );

    if(!isset($config[$type])) $type = &#39;string&#39;;
    $string = $config[$type];

    $code = &#39;&#39;;
    $strlen = strlen($string) -1;
    for($i = 0; $i < $length; $i++){
        $code .= $string{mt_rand(0, $strlen)};
    }
    if(!empty($convert)){
        $code = ($convert > 0)? strtoupper($code) : strtolower($code);
    }
    return $code;
}

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The first type of controller is called directly, and the second type is called according to the needs, which is very convenient; such as: random( 20,number) means randomly generating a 20-digit stored number.

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