第三十七套

1

//生成随机字符串$s='a';for($i=0;$i<15;$i++){    if(rand(0,2)>1)    {        $s.=chr(rand(48, 57));    }    else    {        $s.=chr(rand(97, 122));    }}echo $s.'   ';

自己写的答案,觉得代码有些繁杂,望谅解!

for ($i=0; $i <strlen($s) ; $i++) {     $x = substr($s,$i,1);    $y = ord($x);    if($i ==strlen($s)-1){        if(ord(substr($s,$i,1))>=48&&ord(substr($s,$i,1))<=57){            $left[]=substr($s,$i,1);        }else{            $right[]=substr($s,$i,1);        }    }    if($y>=48&&$y<=57){        for ($j=$i+1; $j <strlen($s) ; $j++) {             if(ord(substr($s,$j,1))>=97&&ord(substr($s,$j,1))<=122){                $left[] =substr($s,$i,$j-$i);                $i =$j-1;                break;            }            if($j==strlen($s)-1){                $left[] =substr($s,$i,$j-$i+1);                break 2;            }        }    }else if($y>=97&&$y<=122){        for ($j=$i+1; $j <strlen($s) ; $j++) {             if(ord(substr($s,$j,1))>=48&&ord(substr($s,$j,1))<=57){                $right[] =substr($s,$i,$j-$i);                $i =$j-1;                break;            }            if($j==strlen($s)-1){                $right[] =substr($s,$i,$j-$i+1);                break 2;            }        }    }}//合并两个数组一个做键一个做值$array_ab=array_combine($right,$left);echo "<pre>";var_dump($array_ab);echo "</pre>";

2.

$T = array();for ($i = 0; $i < 100; $i ++){    $s = array();    for ($n = 0; $n < rand(1, 9); $n ++){        $s[] = '[' . rand(1, 9) . ']';    }    for ($j = 0; $j < rand(1, 9); $j ++){        @eval('$T' . implode('', $s) . '[' . $j . ']' . '=' . rand(1, 10000) . ';');    }}echo '<pre>';print_r($T);

百度搜索的答案

function arr_foreach ($arr)   {      static $tmp=array();       if (!is_array ($arr))      {         return false;      }      foreach ($arr as $val )      {         if (is_array ($val))         {            arr_foreach ($val);         }         else         {            $tmp[]=$val;         }      }      return $tmp;   }echo '<pre>';print_r(arr_foreach($T));echo "</pre>";