PHP - 2D数组表格式

Question

I've got a 2D array of movies with keys which was generated via phpMyAdmin via a MySQL Db.

(Plot cut off from copy pasting)

$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...')
);

I've also got a foreach loop, to loop through the 2D array and return the results as a 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;

And from the results I see on the web page, this displays it like this:

Batman Begins     2005     Action, Adventure     After training ...

How would I be able to display the key as the column header? I've tried making another foreach loop inside the main one, but that returned the header like this: titleyrgenreplottitleyrgenreplot etc.

How would I be able to properly format it in a table, so headers appear?

Also just a small, quick question: instead of exporting the database from phpMyAdmin as a PHP array, how would I be able to update the PHP/webpage when a change has been made in the MySQL database table?

Answer 1

here is how you will get your headers:

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

So your code should now look like:

$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;