function rand_zifu($what,$number){ $string=''; for($i = 1; $i //混合 $panduan=1; if($what == 3){ if(rand(1,2)==1){ $what=1; }else{ $what=2; } $panduan=2; }//数字
if($what==1){ $string.=rand(0,9); }elseif($what==2){ //字母 $rand=rand(0,24); $b='a'; for($a =0;$a $b++; } $string.=$b; } if($panduan==2)$what=3; } return $string; } echo rand_zifu(3,10);
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