如何将数据库中的所有表显示为HTML表？

Question

I have selected values from a single MySQL table and displayed them in a HTML table many times before using PHP, like this:

$query = "SELECT * FROM main";

$result = $connection->query($query);

while ($row = mysqli_fetch_assoc($result)) {
  echo "<tr>";
  echo "<td>" . $row['row1'] . "</td>";
  echo "<td>" . $row['row2'] . "</td>";
  echo "<td>" . $row['row3'] . "</td>";
  echo "<td>" . $row['row4'] . "</td>";
}

How can I display all of the tables in a certain database in the same way? I need it to be dynamic, so that if new tables are added to that database, they will show up on the webpage as well.

This is something I have tried, that doesn't seem to work. Perhaps I can get some feedback?

$query1 = "SHOW TABLES FROM db_name";

// This is equal to the number of tables in the database.
$query2 = "SELECT COUNT(*) FROM main";

$result1 = $connection->query($query1);

$result2 = $connection->query($query2);

$row2 = mysqli_fetch_assoc($result2);

$count = $row2["COUNT(*)"];

$counter = 1;

while ($row1 = mysqli_fetch_array($result1)) {
        ${getter.$counter++} = "SELECT * FROM " . $row[0];
    }

<table>
        <?php
        for ($i = 1; $i <= $count; $i++) {
                ${request.$i} = $connection->query(${getter.$i});
                while ($row3 = mysqli_fetch_assoc(${request.$i})) {
                        echo "<tr>";
                        echo "<td>" . $row['row1'] . "</td>";
                        echo "<td>" . $row['row2'] . "</td>";
                        echo "<td>" . $row['row3'] . "</td>";
                        echo "<td>" . $row['row4'] . "</td>";
                }
        }
        ?>
</table>

Thanks.

Answer 1

If you want to loop through all your tables and list the data from each one in a HTML table, including showing the column names, then this should work for you:

//get all the tables in the database
$sql = "SHOW TABLES FROM db_name";
$result = $connection->query($sql);

if ($result === false) die($conn->error);

//loop through the list of tables
while ($row = $result->fetch_row()) {
    echo "<h2>Table: ".$row[0]."</h2>";

    //now, for the current table, get all the data and loop through the rows
    $sql2 = "SELECT * FROM ".$row[0];
    $result2 = $connection->query($sql2);

    if ($result2)
    {
        //get the column names
        $fields = $result2->fetch_fields();
        echo "<table><thead><tr>";

        //loop through the field names and output each one as a column heading
        foreach ($fields as $fld)
        {
          echo "<th>".$fld->name."</th>";
        }
        echo "</tr></thead><tbody>";

        //get the rows
        while ($row2 = $result2->fetch_row()) {
            echo "<tr>";

            //loop through each data value in the row and output into a HTML table cell
            foreach ($row2 as $cell) {
                echo "<td>".$cell."</td>";
            }
            echo "</tr>";
        }

        echo "</tbody></table><hr>";
    }
    else
    {
      echo "Problem retrieving data for ".$row[0].": ".$conn->error;
    }
}