Get field names from database result - php

Question

Here I want to fetch the field names from the table name which is stored in the variable $table. And want to make a table headers of the field names. What's wrong with this approach I tried:
<?php
$sql=mysql_query("show fields from $table");
if(mysql_num_rows($sql))
while($res = mysql_fetch_object($sql))
{
?>
<th><?php echo $res->field; ?></th>
<?
}
else
{
echo "No data to display";
}
?>

Answer 1

$printTHs = true;
while($res = mysql_fetch_assoc($sql))
{
if ($printTHs)
{
printTableHeader($res);
$printTHs= false;
}
echo "<tr>";
foreach($res as $val)
{
echo "<td>" . $val . "</td>";
}
echo "</tr>";
}
function printTableHeader($res)
{
echo "<tr>";
foreach($res as $col => $val)
{
echo "<th>" . $col . "</th>";
}
echo "</tr>";
}

Answer 2

The query has to be
$sql=mysql_query("show columns from $table");

Answer 3

Use mysql_fetch_assoc() and then get the keys using array_keys(). This will return an array with all the keys.
Use foreach() to get your table headers

Answer 4

Not the optimal solution, but would do it:
$results = mysql_query('SELECT * FROM ' . $table);
if (mysql_num_rows($results))
{
echo '<table>';
$first = TRUE;
while ($row = mysql_fetch_assoc($results))
{
if ($first = TRUE)
{
echo '<tr>';
foreach ($row as $k => $v)
echo '<th>' . $k . '</th>';
echo '</tr>';
$first = FALSE;
}
echo '<tr>';
foreach ($row as $column)
echo '<td>' . $column . '</td>';
echo '</tr>';
}
echo '</table>';
}