Question

我需要将一个数组组织成一个字符串。

我有这个数组：

array(27) {
  [0]=>
  array(3) {
    ["tp__string"]=>
    string(3) "AA,"
    ["cost"]=>
    string(16) "515.771314999996"
    ["count"]=>
    int(47)
  }
  [1]=>
  array(3) {
    ["tp__string"]=>
    string(3) "BB,"
    ["cost"]=>
    string(11) "2718.860891"
    ["count"]=>
    int(281)
  }
  [2]=>
  array(3) {
    ["tp__string"]=>
    string(3) "CC,"
    ["cost"]=>
    string(16) "619.105467999996"
    ["count"]=>
    int(44)
  }
  [3]=>
  array(3) {
    ["tp__string"]=>
    string(3) "DD,"
    ["cost"]=>
    string(16) "2088.84192300001"
    ["count"]=>
    int(131)
  }
  [4]=>
  array(3) {
    ["tp__string"]=>
    string(3) "EE,"
    ["cost"]=>
    string(12) "12124.710324"
    ["count"]=>
    int(955)
  }
  [5]=>
  array(3) {
    ["tp__string"]=>
    string(3) "BB,"
    ["cost"]=>
    string(10) "1543.73578"
    ["count"]=>
    int(164)
  }
  [6]=>
  array(3) {
    ["tp__string"]=>
    string(3) "CC,"
    ["cost"]=>
    string(16) "319.932651999999"
    ["count"]=>
    int(26)
  }

这就是我需要组织数据的方式

所以我必须创建一些字符串：echo '515.771314999996', '47', 'NULL','NULL','NULL','NULL'; - 第二行的例子。

密钥可以更改，也可以更改列数和行数提取数据的最简单，最快捷的方法是什么？

修改

要创建第一行，我有：

function array_flatten($array) {
    $return = array();
    foreach ($array as $key => $value) {
        if (is_array($value)){ $return = array_merge($return, array_flatten($value));}
        else {$return[$key] = $value;}
    }
    return $return;
}

function unset_num_keys($array){
    $array_out = array();
    foreach($array AS $k => $v)
    {
        if(is_array($v))                           
        {
            $array_out[$k] = unset_num_keys($v);    
        }
        elseif(!is_numeric($k))
        {
            $array_out[$k] = $v;                    
        }
    }
    return $array_out;
}


$arr = (unset_num_keys($aaa));

$tmp = array();
foreach($arr as $x){
    array_push($tmp, (array_keys($x)));
}

$titles = (array_unique(array_flatten($tmp)));

$first_value = reset($titles);
$firstColum = array();
foreach($titles as $title){
    foreach($arr as $a){
      array_push($firstColum, $a[$first_value]);
    }
}


$first_line = "['x', ";
end($arr);
$total = key($arr);

$i = 0;


$firlsColum_clean= (array_unique(array_flatten($firstColum)));

foreach ($firlsColum_clean as $first) {
    $new = str_replace(',', '', $first);
    if ($i == $total) {
        $first_line .= $new;
    } else {
        $first_line .= $new . ', ';
    }
    $i += 1;
}
$first_line .= "],";

但是我很难理解下一行的逻辑。

Answer 1

使用foreach和implode解析数组，然后编写代码来组织结果字符串

Answer 2

[How create an array from the output of an array printed with print_r? 检查链接，你会找到你的解决方案，在这里我发现了类似你的问题..

Answer 3

您可以将此代码用于上述解决方案

$array1=array();
foreach($array as $key=>$value)
{
     //put the value into X field
     echo $value['cost'];
     if(in-array($value['tp_string'],$array1))
     {
        //put the value of tp_strings to corrosponding column and all other put null value
        echo  $value['tp_strings'];
     }
     else
     {
          array_push($value['tp_string'],$array1);
          //create new coloumn and put value into new column and all other put null value
          echo $value['tp_strings'];
      }


}

Answer 4

$ar = array() // your data here
$result = array() // this is what we will use later
$head = array() // this is your column headers

// make your data make sense
foreach($ar as $item) {
  $result[$item['cost']][$item['tp_string']]=$item['count'];
  if(!in_array($item['tp_string'], $head)) $head[] = $item['tp_string'];
}

// sort the columns
sort($head);

// print your headers
print 'X';
foreach($head as $col) print ",{$col}";

// print your data
foreach($result as $cost=>$data) {
  print PHP_EOL;
  print $cost;

  // print the row data
  foreach($head as $col) {
    print ',' . (isset($data[$col])) ? $data[$col] : "NULL");
  }
}

以奇怪的顺序从数组中提取数据

4 个答案: