PHP? ??? ?? ?? ???? ?? ?? ??(2?)

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<?php
    header("Content-type: text/html; charset=utf-8");//設(shè)置編碼
    $con =@mysql_connect("localhost","root","root") or die("數(shù)據(jù)庫連接失敗");
    mysql_select_db('news') or die("指定的數(shù)據(jù)庫不能打開");
    mysql_query("set names utf8");//設(shè)置數(shù)據(jù)庫的字符集
    $id=$_GET['id'];
    $sql="select * from new where id=$id";
    $res = mysql_query($sql);
    $row = mysql_fetch_array($res);
?>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title></title>
    <style type="text/css">
    *{margin:0px;padding:0px;}
    body{background:#ccc;}
    .add{width:450px;height:280px;background:#eee;float:left;}
    .cont{width:500px;height:350px;margin-top:5px;margin-left:5px;}
    form{margin-left:10px;padding-top:30px;}
    .sub{width:100px;height:40px;border:1px solid #ccc;}
    .sub:hover{background:#f90}
    </style>
</head>
<body>
    <div class="add">
        <div class="cont">
            <form method="post" action="modify.php?id=<?php echo $id;?>">
                標(biāo)題：<input type="text" name="title" value="<?php echo $row['title']?>"></br></br>
                內(nèi)容：<textarea cols="50" rows="5" name="content"><?php echo $row['content']?></textarea></br></br>
                <input type="submit" value="修改" class="sub">
            </form>
        </div>
    </div>
</body>
</html>

? ??? ????? ??? ??? ????. ??.php? ??? ? ??? ???????.

?? ??????? ???? ???

 <?php
    header("Content-type: text/html; charset=utf-8");//設(shè)置編碼
    $con =@mysql_connect("localhost","root","root") or die("數(shù)據(jù)庫連接失敗");
    mysql_select_db('news') or die("指定的數(shù)據(jù)庫不能打開");
    mysql_query("set names utf8");//設(shè)置數(shù)據(jù)庫的字符集

?? ?? ?? ??? ?????

 <?php 
    $id = $_GET['id'];
    $title = $_POST['title'];
    $content = $_POST['content'];
    $messtime = time();

??: ???? ID? ???? ???. ?? ????? ??? ??? ?? ?? ??? ???? ? ?? ???? ??? ?????. ??? ID? ???? ?? ?????.

???? ?????. ???

$sql = "? ?? ?? ????=' $title',content='$content',messtime='$messtime' where id='$id'";

$res = mysql_query($sql );

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if($res){
???????????????????????????????????????????????????????????????????????~????????????????????????????????? Echo "<script>alert('?? ??');location.href='newlist.php';</script>" ; ('?? ??');history.go(-1);</script>";
}

??? ??? ??? ????.

<?php
	header("Content-type: text/html; charset=utf-8");//設(shè)置編碼
	$con =@mysql_connect("localhost","root","root") or die("數(shù)據(jù)庫連接失敗");
	mysql_select_db('news') or die("指定的數(shù)據(jù)庫不能打開");
	mysql_query("set names utf8");//設(shè)置數(shù)據(jù)庫的字符集

	$id = $_GET['id'];
	$title = $_POST['title'];
	$content = $_POST['content'];
	$messtime = time();

	$sql = "update new set title='$title',content='$content',messtime='$messtime' where id='$id'";
	$res = mysql_query($sql);
	if($res){
		echo "<script>alert('修改成功');location.href='newlist.php';</script>";
	}else{
		echo "<script>alert('修改失敗');history.go(-1);</script>";
	}
?>

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