Question

我有一个如下所示的数组：

array (size=6)
  0 => 
    array (size=3)
      'name' => string 'Umber' 
      'reason' => string 'No data' 
      'id' => string '12'
  1 => 
    array (size=3)
      'name' => string 'Jakar' 
      'reason' => string 'Wrong format' 
      'id' => string '12'
  2 => 
    array (size=3)
      'name' => string 'Lane'
      'reason' => string 'No data'
      'id' => string '12' 
  3 => 
    array (size=3)
      'name' => string 'Jake' 
      'reason' => string 'Not found' 
      'id' => string '13' 
  4 => 
    array (size=3)
      'name' => string 'Jame' 
      'reason' => string 'Wrong name'
      'id' => string '13'
  5 => 
    array (size=3)
      'name' => string 'Joe' 
      'reason' => string 'No data' 
      'id' => string '13'

如果ID值相同，我想要做的是将这些元素分组到表格行中：

12 | No data, wrong format, No data
13 | Not found, Wrong name, No data

我知道我必须将foreach用于这个，但是将这些元素分组在一行中的逻辑超出了我的范围。任何帮助，将不胜感激。提前致谢。我已经开始了。

foreach($a as $value){
echo $value['id'] . ' ' . $value['reason'];
}

Answer 1

第一组元素到子数组，然后输出每个子数组：

$groups = [];
foreach($a as $value){
    if (!isset($groups[$value['id']])) {
        $groups[$value['id']] = [];

        // update
        $groups[$value['id']] = [
            'names' => [],
            'reasons' => [],
        ];
    }
    $groups[$value['id']][] = $value['reason'];

    // update
    $groups[$value['id']]['names'][] = $value['name'];
    $groups[$value['id']]['reasons'][] = $value['reason'];
}

foreach ($groups as $key => $value) {
    echo $key . ' | ' . implode(', ', $value);

    // update
    echo $key . ' | ' . implode(', ', $value['names']) . ' | ' . implode(', ', $value['reasons']);
}

Answer 2

也许是这样的。它应该有助于您入门：

$output = [];
foreach ($arrary as $arr) {
    if (!isset($output[$arr['id']])) {
        $output[$arr['id']] = [];
    }

    $output[$arr['id']][] = $arr['reason'];
}

foreach ($output as $k => $v) {
    echo $k;
    echo implode(',', $v);
}

php foreach组元素具有相同的值

2 个答案: