目录
以上代码可生成array('a1','b2','c3','d4','e5','x1','y1','z1');这个数组中某三个元素的不同组合,你可以通过laravel(用这个框架写的)或php执行(可能需要小改一下),看一下显示结果,结果应该如下:
array(3) { [0]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "y1" }
这个函数虽然能列印出来这个结果,但是我想通过return把以上n行一维数组以一个整体的二维数组返回并可以调用对比等,一直没人能解答,苦苦求问!!!
回复内容:
首页 后端开发 php教程 求一个递归函数把其显示出来的数据以数据形式return

求一个递归函数把其显示出来的数据以数据形式return

Jul 06, 2016 pm 01:53 PM
php

<code>        function strToLeft($num,$arr){
            $i = $arr[$num];
            unset($arr[$num]);
            array_push($arr,$i);
            return $arr;
        }

        function combine_increase($arr, $start, $result, $count, $NUM, $arr_len)  
        {  
          $i = 0; 
          for ($i = $start; $i = 0; $j--)  {
                //if ($j!=0){echo($arr[$result[$j]].",");  }else{echo($arr[$result[$j]]);  }
                array_push($tmp, $arr[$result[$j]]);
              }
              var_dump(strToLeft(rand(0,$NUM-1),$tmp));
              echo("<br>");  

            }  
            else  { combine_increase($arr, $i + 1, $result, $count - 1, $NUM, $arr_len);  }
          }  
        } 
        
         $arr = array('a1','b2','c3','d4','e5','x1','y1','z1');
         $num = 3;  
         $result[$num]=array();
         echo "('a1','b2','c3','d4','e5','x1','y1','z1')";
         echo "<br>";
         combine_increase($arr, 0, $result, $num, $num, count($arr));</code>
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以上代码可生成array('a1','b2','c3','d4','e5','x1','y1','z1');这个数组中某三个元素的不同组合,你可以通过laravel(用这个框架写的)或php执行(可能需要小改一下),看一下显示结果,结果应该如下:

('a1','b2','c3','d4','e5','x1','y1','z1')
array(3) { [0]=> string(2) "a1" [2]=> string(2) "c3" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "d4" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "b2" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "y1" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "d4" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "c3" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "y1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "d4" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "d4" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "x1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "x1" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "z1" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "c3" [2]=> string(2) "d4" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "c3" [2]=> string(2) "e5" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "x1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "c3" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "d4" [3]=> string(2) "e5" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "y1" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "x1" [3]=> string(2) "e5" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "e5" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "e5" [3]=> string(2) "z1" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "x1" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "y1" [2]=> string(2) "z1" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "e5" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "z1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "x1" [3]=> string(2) "c3" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "c3" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "c3" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "c3" [2]=> string(2) "z1" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "e5" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "d4" [1]=> string(2) "e5" [3]=> string(2) "z1" }
array(3) { [0]=> string(2) "d4" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [1]=> string(2) "y1" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "y1" }

array(3) { [0]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "y1" }

每次生成的结果每行可能有变化,但是行数不变

**

这个函数虽然能列印出来这个结果,但是我想通过return把以上n行一维数组以一个整体的二维数组返回并可以调用对比等,一直没人能解答,苦苦求问!!!

**

回复内容:

<code>        function strToLeft($num,$arr){
            $i = $arr[$num];
            unset($arr[$num]);
            array_push($arr,$i);
            return $arr;
        }

        function combine_increase($arr, $start, $result, $count, $NUM, $arr_len)  
        {  
          $i = 0; 
          for ($i = $start; $i = 0; $j--)  {
                //if ($j!=0){echo($arr[$result[$j]].",");  }else{echo($arr[$result[$j]]);  }
                array_push($tmp, $arr[$result[$j]]);
              }
              var_dump(strToLeft(rand(0,$NUM-1),$tmp));
              echo("<br>");  

            }  
            else  { combine_increase($arr, $i + 1, $result, $count - 1, $NUM, $arr_len);  }
          }  
        } 
        
         $arr = array('a1','b2','c3','d4','e5','x1','y1','z1');
         $num = 3;  
         $result[$num]=array();
         echo "('a1','b2','c3','d4','e5','x1','y1','z1')";
         echo "<br>";
         combine_increase($arr, 0, $result, $num, $num, count($arr));</code>
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以上代码可生成array('a1','b2','c3','d4','e5','x1','y1','z1');这个数组中某三个元素的不同组合,你可以通过laravel(用这个框架写的)或php执行(可能需要小改一下),看一下显示结果,结果应该如下:

('a1','b2','c3','d4','e5','x1','y1','z1')
array(3) { [0]=> string(2) "a1" [2]=> string(2) "c3" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "d4" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "b2" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "y1" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "d4" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "c3" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "y1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "e5" [3]=> string(2) "d4" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "d4" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "x1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "a1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [1]=> string(2) "x1" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "a1" }
array(3) { [0]=> string(2) "a1" [2]=> string(2) "z1" [3]=> string(2) "y1" }
array(3) { [1]=> string(2) "c3" [2]=> string(2) "d4" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "c3" [2]=> string(2) "e5" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "x1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "c3" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "d4" [3]=> string(2) "e5" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "b2" }
array(3) { [1]=> string(2) "d4" [2]=> string(2) "y1" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "x1" [3]=> string(2) "e5" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "e5" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "e5" [3]=> string(2) "z1" }
array(3) { [0]=> string(2) "b2" [1]=> string(2) "x1" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "b2" [2]=> string(2) "z1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "y1" [2]=> string(2) "z1" [3]=> string(2) "b2" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "e5" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "c3" [1]=> string(2) "d4" [3]=> string(2) "z1" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "x1" [3]=> string(2) "c3" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "c3" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "c3" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "c3" }
array(3) { [0]=> string(2) "c3" [2]=> string(2) "z1" [3]=> string(2) "y1" }
array(3) { [0]=> string(2) "d4" [2]=> string(2) "x1" [3]=> string(2) "e5" }
array(3) { [1]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "d4" [1]=> string(2) "e5" [3]=> string(2) "z1" }
array(3) { [0]=> string(2) "d4" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [1]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [1]=> string(2) "y1" [2]=> string(2) "z1" [3]=> string(2) "d4" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "y1" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "x1" }
array(3) { [0]=> string(2) "e5" [2]=> string(2) "z1" [3]=> string(2) "y1" }

array(3) { [0]=> string(2) "x1" [2]=> string(2) "z1" [3]=> string(2) "y1" }

每次生成的结果每行可能有变化,但是行数不变

**

这个函数虽然能列印出来这个结果,但是我想通过return把以上n行一维数组以一个整体的二维数组返回并可以调用对比等,一直没人能解答,苦苦求问!!!

**

这是个递归函数。。其实你要是在Larvae里面用,某个控制器,或者你自己写的class。反正一定要是个类里面,就可以这样

首先在顶端声明一个变量

<code>var $res_array;
</code>
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然后在初始化里面去填空这个数组

<code>$this->res_array = [];
</code>
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然后在下面你的Function里面,不要输出,而是放到数组里。

<code>        function combine_increase($arr, $start, $result, $count, $NUM, $arr_len)  
        {  
          $i = 0; 
          for ($i = $start; $i = 0; $j--)  {
                //if ($j!=0){echo($arr[$result[$j]].",");  }else{echo($arr[$result[$j]]);  }
                array_push($tmp, $arr[$result[$j]]);
              }
              $this->res_array[] = strToLeft(rand(0,$NUM-1),$tmp);

            }  
            else  { combine_increase($arr, $i + 1, $result, $count - 1, $NUM, $arr_len);  }
          }  
        }
        </code>
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最后调用的时候

<code> $arr = array('a1','b2','c3','d4','e5','x1','y1','z1');
 $num = 3;  
 $result[$num]=array();
 echo "('a1','b2','c3','d4','e5','x1','y1','z1')";
 echo "<br>";
 combine_increase($arr, 0, $result, $num, $num, count($arr));
 $res = $this->res_array; //就是你要的东西了
 </code>
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不过这里注意,一定是个类才能这么玩,PHP也有种办法,其实就是声明一个全局变量,然后把你所有echo数组的那里变成存入这个变量。最后取这个变量就行了。。。

或者。你如果不想用全局变量。那么就传递吧。

<code>        function combine_increase($arr, $start, $result, $count, $NUM, $arr_len, &$res_arr)  
        {  
          $i = 0; 
          for ($i = $start; $i = 0; $j--)  {
                //if ($j!=0){echo($arr[$result[$j]].",");  }else{echo($arr[$result[$j]]);  }
                array_push($tmp, $arr[$result[$j]]);
              }
              $res_arr[] = strToLeft(rand(0,$NUM-1),$tmp);

            }  
            else  { combine_increase($arr, $i + 1, $result, $count - 1, $NUM,  $arr_len,$res_arr);  }
          }  
        } 
        </code>
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调用的时候

<code> $arr = array('a1','b2','c3','d4','e5','x1','y1','z1');
 $num = 3;  
 $result[$num]=array();
 echo "('a1','b2','c3','d4','e5','x1','y1','z1')";
 echo "<br>";
 combine_increase($arr, 0, $result, $num, $num, count($arr), $res_arr);
 var_dump($res_arr); //$res_arr就你要的那个</code>
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你可以去看看这个函数array_combine(),他拥有自动排序的功能

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视觉化网页开发工具

SublimeText3 Mac版

SublimeText3 Mac版

神级代码编辑软件(SublimeText3)

CakePHP 项目配置 CakePHP 项目配置 Sep 10, 2024 pm 05:25 PM

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适用于 Ubuntu 和 Debian 的 PHP 8.4 安装和升级指南 适用于 Ubuntu 和 Debian 的 PHP 8.4 安装和升级指南 Dec 24, 2024 pm 04:42 PM

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CakePHP 日期和时间 CakePHP 日期和时间 Sep 10, 2024 pm 05:27 PM

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为了进行文件上传,我们将使用表单助手。这是文件上传的示例。

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在本章中,我们将学习以下与路由相关的主题?

讨论 CakePHP 讨论 CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP 是 PHP 的开源框架。它的目的是使应用程序的开发、部署和维护变得更加容易。 CakePHP 基于类似 MVC 的架构,功能强大且易于掌握。模型、视图和控制器 gu

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可以通过在控制器中添加以下两行来创建验证器。

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Visual Studio Code,也称为 VS Code,是一个免费的源代码编辑器 - 或集成开发环境 (IDE) - 可用于所有主要操作系统。 VS Code 拥有针对多种编程语言的大量扩展,可以轻松编写

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