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SQL结构从数据库中抽取数据自动更新PHP循环
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
当我更新通过POST x和y或GET,我想拉离新数据数据库没有刷新网站,我将如何管理?有人能给我一些例子,因为我真的被困在这里。
<?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>";
?>
使用AJAX。它会允许你这样做 – hjpotter92 2012-04-03 17:25:42
我是否需要改变输出,或者我可以保留我的php表代码? – 2012-04-03 17:28:59
只需注意:我不会“回显”输出的每一行。只需创建一个变量并不断更新,然后在代码结尾处回显(或返回)该变量。 – jwhat 2012-04-03 17:30:13