PHP组/嵌套数组结果

时间：2019-02-25 03:26:53

标签： php arrays foreach

我需要显示一些要接受培训的学生，按他们的培训日期，然后按照他们的组织进行分组。

但这让我完全陷入了困境。 数组看起来像这样：

$bookings = 
array(
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 1" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 2" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 3" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 4" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 5" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 6" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 7" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 8" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 9" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 10" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 11" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 12" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 13" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 14" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 15" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 16" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 17" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 18" )
);

在此示例中，有3个日期，5个公司和18个学生 我试图通过预先从主数组创建日期和预订数组来嵌套它们，以产生以下结果：

<div class="Date">Bookings for 12/05/2019</div>
    <div class="Company">Booked for Company 1</div>
        <div class="Student">Student 1</div>
        <div class="Student">Student 2</div>
        <div class="Student">Student 3</div>
        <div class="Student">Student 4</div>
        <div class="Student">Student 5</div>
    <div class="Company">Booked for Company 2</div>
        <div class="Student">Student 6</div>
        <div class="Student">Student 7</div>
        <div class="Student">Student 8</div>
<div class="Date">Bookings for 19/05/2019</div>
    <div class="Company">Booked for Company 3</div>
        <div class="Student">Student 9</div>
        <div class="Student">Student 10</div>
        <div class="Student">Student 11</div>
        <div class="Student">Student 12</div>
<div class="Date">Bookings for 26/05/2019</div>
    <div class="Company">Booked for Company 4</div>
        <div class="Student">Student 13</div>
        <div class="Student">Student 14</div>
        <div class="Student">Student 15</div>
    <div class="Company">Booked for Company 5</div>
        <div class="Student">Student 16</div>
        <div class="Student">Student 17</div>
        <div class="Student">Student 18</div>

但是，当然，我对PHP的基本了解使我痛苦不堪，而我却没有。我只是迷路了。

我的恐怖代码当前如下所示：

$by_date = array();

foreach( $bookings as $dte )
    {
        $by_date['Date'][] = $dte['Date'];
    }

$by_company = array();

foreach( $bookings as $comp )
    {
        $by_company['Company'][] = $comp['Company'];
    }


foreach($by_date as $did => $company_array)
{
    $b_date = $company_array[0]['Date'];
    echo '<div class="Date">Bookings for '.$b_date.'</div>';
        foreach( $by_company as $cid => $student_array )
        {
            $c_name = $student_array[0]['Company'];
            echo '<div class="Company">Bookings for '.$c_name.'</div>';

            foreach( $student_array as $student )
            {
                $stud = $student[0]['Student'];
                echo '<div class="Student">'.$stud.'</div>';
            }
        }
}

任何帮助都将不胜感激。

3 个答案:

答案 0 :(得分：1)

此技巧是：将当前数组更改为树数组。关键是数据，公司：

  

提示：在PHP 7中，您可以通过[]声明数组

$bookings = 
array(
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 1" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 2" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 3" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 4" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 5" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 6" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 7" ),
    array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 8" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 9" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 10" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 11" ),
    array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 12" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 13" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 14" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 15" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 16" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 17" ),
    array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 18" )
);

$result = [];
foreach($bookings as $itemBooking){
    $result[$itemBooking["Date"]][$itemBooking["Company"]][]=$itemBooking["Student"];
}

foreach($result as $date => $company_array)
{
    echo '<div class="Date">Bookings for '.$date.'</div>';
        foreach( $company_array as $company => $student_array )
        {
            echo '<div class="Company">Bookings for '.$company.'</div>';

            foreach( $student_array as $student )
            {
                echo '<div class="Student">'.$student.'</div>';
            }
        }
}

答案 1 :(得分：0)

使Call insertRows(tgtWorksheet, insertRow, NumRows) 成为多维数组

$bookings

新数组将返回：

$bookings =
    array(
        array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 1" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 2" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 3" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 4" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 1","Student"=>"Student 5" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 6" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 7" ),
        array( "Date"=>"12/05/2019","Company"=>"Company 2","Student"=>"Student 8" ),
        array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 9" ),
        array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 10" ),
        array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 11" ),
        array( "Date"=>"19/05/2019","Company"=>"Company 3","Student"=>"Student 12" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 13" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 14" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 4","Student"=>"Student 15" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 16" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 17" ),
        array( "Date"=>"26/05/2019","Company"=>"Company 5","Student"=>"Student 18" )
    );
$arr = [];
foreach ($bookings as $row){
    $arr[$row['Date']][$row['Company']][] = $row['Student'];
}

然后，您可以使用如下所示的3个循环进行数组处理。 

Array
(
[12/05/2019] => Array
    (
        [Company 1] => Array
            (
                [0] => Student 1
                [1] => Student 2
                [2] => Student 3
                [3] => Student 4
                [4] => Student 5
            )
     )
)

答案 2 :(得分：0)

使用函数实现此功能的另一种有趣方式。...

$this->em->getRepository(...)
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