PHP

Question

我有一个带有密钥的二维电影数组，这些密钥是通过 MySQL Db 通过 phpMyAdmin 生成的。

（剧情从复制粘贴中截断）

$films = array(
  array('title' => 'Batman Begins','yr' => '2005','genre' => 'Action, Adventure','plot' => 'After training with his mentor, Batman begins his w...')
  array('title' => 'Ted 2','yr' => '2015','genre' => 'Comedy','plot' => 'Newlywed couple Ted and Tami-Lynn want to have a baby, but in order to...')
  array('title' => 'Ted','yr' => '2012','genre' => 'Comedy, Fantasy','plot' => 'As the result of a childhood wish, John Bennett\'s teddy bear, ...')
  array('title' => 'Interstellar','yr' => '2014','genre' => 'Adventure, Sci-Fi','plot' => 'A team of explorers travel through a wormhole in spa...')
);

我还有一个 foreach 循环，用于遍历二维数组，return 结果为 table:

$out = "";
$out .= "<table>";
foreach($films as $key => $element){
  $out .= "<tr>";
  foreach($element as $subk => $subel){
    $out .= "<td>$subel</td>";
  }
  $out .= "</tr>";
}
$out .="<table>";

echo $out;

从我在网页上看到的结果来看，它是这样显示的：

Batman Begins 2005 动作、冒险训练后 ...

如何才能将键显示为列 header？我试过在主循环中制作另一个 foreach 循环，但是 returned header 是这样的：titleyrgenreplottitleyrgenreplot 等

我如何才能将其正确格式化为 table，从而出现 header？

还有一个小而快速的问题：不是将数据库从 phpMyAdmin 导出为 PHP 数组，而是如何在 PHP/webpage 中进行更改时更新MySQL 数据库 table?

Answer 1

以下是您获得 headers 的方法：

$headers="<thead><tr>";
foreach($films as $key => $element){
   $headers.= "<th>$key</th>";
  }
$headers.= "</tr></thead>";

所以您的代码现在应该如下所示：

$out = "";
$out .= "<tbody>";
$headers="<table><thead><tr>";
foreach($films as $key => $element){
  $headers.= "<th>$key</th>";
  $out .= "<tr>";
  foreach($element as $subk => $subel){
      $out .= "<td>$subel</td>";
  }
  $out .= "</tr>";
}
$out .="</tbody><table>";
$headers.= "</tr></thead>";

echo $headers;
echo $out;

Answer 2

为了将字段显示为 header，我们只需要遍历第一个子数组的键并添加另一行 (<tr>) table header(<th>) before 循环遍历整个结果。一般我们只显示一次headers。

 $out = "";
 $out .= "<table>";
 $out .= "<tr>";
 foreach($films[0] as $key => $value)
 {
   $out  .= "<th>".$key."</th>";
 }
 $out .= "</tr>";
 foreach($films as $key => $element){
  $out .= "<tr>";

  foreach($element as $subk => $subel){
   $out .= "<td>$subel</td>";
  }
  $out .= "</tr>";
 }
 $out .="<table>";

 echo $out;

PHP - 二维数组 table 格式化

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