Automatically update php loop with data pulled from database
- by John Svensson
SQL STRUCTURE
CREATE TABLE IF NOT EXISTS `map` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`x` int(11) NOT NULL,
`y` int(11) NOT NULL,
`type` varchar(50) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
http://localhost/map.php?x=0&y=0
When I update the x and y via POST or GET, I would like to pull the new data from the database without refreshing the site, how would I manage that? Could someone give me some examples, because I am really stuck here.
<?php
mysql_connect('localhost', 'root', '');
mysql_select_db('hol');
$startX = $_GET['x'];
$startY = $_GET['y'];
$fieldHeight = 6;
$fieldWidth = 6;
$sql = "SELECT id, x, y, type FROM map WHERE x BETWEEN ".$startX." AND ".($startX+$fieldWidth). " AND y BETWEEN ".$startY." AND ".($startY+$fieldHeight);
$result = mysql_query($sql);
$positions = array();
while ($row = mysql_fetch_assoc($result)) {
$positions[$row['x']][$row['y']] = $row;
}
echo "<table>";
for($y=$startY; $y<$startY+$fieldHeight; $y++) {
echo "<tr>";
for($x=$startX; $x<$startX+$fieldWidth; $x++) {
echo "<td>";
if(isset($positions[$x][$y])) {
echo $positions[$x][$y]['type'];
}
else {
echo "(".$x.",".$y.")";
}
echo "</td>";
}
echo "</tr>";
}
echo "</table>";
?>
