时间:2021-07-01 10:21:17 帮助过:5人阅读
php生成16位只有数字随机数
分享一个php生成16位随机数的代码,php生成随机数的二种方法。
方法1,
php $a = mt_rand(10000000,99999999); $b = mt_rand(10000000,99999999); echo $a.$b;
方法2:
php $a = range(0,9); for($i=0;$i<16;$i++){ $b[] = array_rand($a); } // www.yuju100.com var_dump(join("",$b)); //结果string(16) "0179571910024734"
$result=random(10);//生成10位随机数
//$result=random(10, '123456789abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ');//生成10位字母数字混合字符串
echo "";
/**
* 产生随机字符串
*
* @param int $length 输出长度
* @param string $chars 可选的 ,默认为 0123456789
* @return string 字符串
*/
function random($length, $chars = '0123456789') {
$hash = '';
$max = strlen($chars) - 1;
for($i = 0; $i < $length; $i++) {
$hash .= $chars[mt_rand(0, $max)];
}
return $hash;
}
?>
纯数字的四位随机数
rand(1000,9999)
数字和字符混搭的四位随机字符串:
function GetRandStr($len)
{
$chars = array(
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
"l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
"w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
"H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
"3", "4", "5", "6", "7", "8", "9"
);
$charsLen = count($chars) - 1;
shuffle($chars);
$output = "";
for ($i=0; $i<$len; $i++)
{
$output .= $chars[mt_rand(0, $charsLen)];
}
return $output;
}
echo GetRandStr(4);
http://www.bkjia.com/PHPjc/878339.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/878339.htmlTechArticlephp生成16位只有数字随机数,php16位随机数 php生成16位只有数字随机数 分享一个php生成16位随机数的代码,php生成随机数的二种方法。 方法...