隨機數(shù)字

function createRandomInt($length){
   for($i=0;$i<$length;$i++){
       $int[] = array_rand(range(0,9));
   }
   return join("",$int);
}

/***********輸出
echo $y = createRandomInt(32);//輸出32位數(shù)字

隨機字符串

function createRandomStr($length){
   $str = array_merge(range(0,9),range('a','z'),range('A','Z'));
   shuffle($str);
   $str = implode('',array_slice($str,0,$length));
   return $str;
}

/********輸出
echo $y = createRandomStr(32);//輸出32位字符串