~~~ /**? ?*?\[build_count_rand?生成一定數量的隨機數，并且不重復\] ?*?@param??\[type\]??$number?\[數量\] ?*?@param??integer?$length?\[長度\] ?*?@param??integer?$mode???\[字串類型?0?字母?1?數字?其它?混合\] ?*?@return?\[type\]??????????\[description\] ?*/ function?build_count_rand?($number,$length=4,$mode=1) { ????if($mode==1?&&?$length<strlen($number)?)?{ ????????//不足以生成一定數量的不重復數字 ????????return?false; ????} ????$rand???=??array(); ????for($i=0;?$i<$number;?$i++)?{ ????????$rand\[\]?=?rand_string($length,$mode); ????} ????$unqiue?=?array_unique($rand); ????if(count($unqiue)==count($rand))?{ ????????return?$rand; ????} ????$count???=?count($rand)-count($unqiue); ????for($i=0;?$i<$count*3;?$i++)?{ ????????$rand\[\]?=?rand_string($length,$mode); ????} ????$rand?=?array_slice(array_unique?($rand),0,$number); ????return?$rand; } ~~~