php生成隨機字串函式
阿新 • • 發佈：2019-01-04
/**
* 生成隨機串
*
* @param int $len
* @param int $code_type 1全部 2 英文字母 3數字
* @return string
*/
function generate_code($len = 4, $code_type = 1)
{
$chars_array = array(
'1' => '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ',
'2' => 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ',
'3' => '1234567890'
);
$chars = $chars_array[$code_type];
for ($i = 0, $count = strlen($chars); $i < $count; $i++)
{
$arr[$i] = $chars[$i];
}
mt_srand((double) microtime() * 1000000);
shuffle($arr);
$code = substr(implode('', $arr), 5, $len);
return $code;
}
* 生成隨機串
*
* @param int $len
* @param int $code_type 1全部 2 英文字母 3數字
* @return string
*/
function generate_code($len = 4, $code_type = 1)
{
$chars_array = array(
'1' => '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ',
'2' => 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ',
'3' => '1234567890'
);
$chars = $chars_array[$code_type];
for ($i = 0, $count = strlen($chars); $i < $count; $i++)
{
$arr[$i] = $chars[$i];
}
mt_srand((double) microtime() * 1000000);
shuffle($arr);
$code = substr(implode('', $arr), 5, $len);
return $code;
}