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); }
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='string', $convert=0){ $config = array( 'number'=>'1234567890', 'letter'=>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'string'=>'abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ23456789', 'all'=>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890' ); if(!isset($config[$type])) $type = 'string'; $string = $config[$type]; $code = ''; $strlen = strlen($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; }
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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