如何使用PHP将输出数组转换为字符串或变量?

如何使用PHP将输出数组转换为字符串或变量?,php,arrays,Php,Arrays,我在数组中得到一个输出: array (size=3) 8 => string 'Mexico' (length=6) 24 => string 'UAE' (length=3) 34 => string 'India' (length=5) array (size=9) 2 => string '' (length=0) 8 => string 'Large' (length=5) 14 => string '' (

我在数组中得到一个输出:

    array (size=3)
  8 => string 'Mexico' (length=6)
  24 => string 'UAE' (length=3)
  34 => string 'India' (length=5)

    array (size=9)
  2 => string '' (length=0)
  8 => string 'Large' (length=5)
  14 => string '' (length=0)
  19 => string '' (length=0)
  23 => string '' (length=0)
  24 => string 'Micro' (length=5)
  34 => string 'Large' (length=5)
  35 => string '' (length=0)
  38 => string '' (length=0)
我希望输出的格式如下:这意味着需要比较两者的id

Mexico - Large (8)
UAE - Micro (24)
India - Large (34)
PHP SRIPT

<?php
  $entities = $check_list = [];

  foreach($_POST as $k => $v) {
    if(preg_match("/^check_list(\d+)$/", $k, $matches))
      $check_list[intval($matches[0])] = $v;
    unset($matches);
    if(preg_match("/^entity_selected(\d+)$/", $k, $matches))
      $entities[intval($matches[0])] = $v;
  };
            var_dump($_POST['check_list']);

            var_dump($_POST['entity_selected']);

            echo implode(" ",$_POST['entity_selected'])."<br>";

            echo implode(" ",$_POST['check_list'])."<br>";
?>

我需要比较变量并将相应的数据插入数据库。但是我不能把这些数据变成变量。我该怎么做

这是我的PHP表单脚本:

<form method="POST" action="nextpage1.php">
  <table border="1">
    <?php
      $i = 0;
      while($row1 = mysqli_fetch_array($result_country))  {
        $country1 = $row1['country'];
        $entity1 = $row1['entity'];
        echo "<tr>";
        ?>
          <td>
            <input name="check_list[<?php echo $i; ?>]" type="checkbox" value="<?php echo $country1;?>"> <?php echo $country1;?>
          </td>
          <td>
            <?php
              if($entity1=="Yes") {
                ?>
                  <select class="form-control selectpicker" name="entity_selected[<?php echo $i; ?>]">
                                      <option value="">Select</option>

                    <option value="Micro">Micro</option>
                    <option value="Small">Small</option>
                    <option value="Large">Large</option>
                  </select>
                <?php
              };
            ?>
          </td>
        <?php
        $i++;
        echo "</tr>";
      };
    ?>
  </table>


你把事情复杂化了。只需在
$\u POST['check\u list']
中循环,并使用其键在
$\u POST['entity\u selected']
中查找关联的值:

foreach ($_POST['check_list'] as $key => $country) {
    echo $country . ' - ' . $_POST['entity_selected'][$key] . ' (' . $key . ')'. "\n";
}
这假设在
$\u POST['entity\u selected']
中总是有一个对应的键,就像在
$\u POST['check\u list']
中一样

如果您想使输出更加直观,还可以使用
printf()
帮助设置格式:

foreach ($_POST['check_list'] as $key => $country) {
    printf('%s - $s (%u)%s', $country, $_POST['entity_selected'][$key], $key, "\n");
}

以下是我个人对代码美观的看法。我将
$key
更改为
$id
,然后
$size=$\u POST['entity\u selected'][$id]??'大小未知'
then
echo“{$country}-{$size}({$id})”谢谢。@厕所。我已经用表单脚本更新了问题,也是从生成此数组的位置更新的。我在运行第一个脚本时出错。分析错误:语法错误,意外的“$\u POST”(T_变量),应为“,”或“;”我还需要在这里显示实体名称。它没有表现出来是的,我试过了,它现在起作用了。非常感谢。:)有人能帮我吗?