我试着在grapht.php页面中输入数字表单并进行搜索。例如,我编写代码:
<form action="grapht.php" method="post">
Name: <input type="text" name="number" autocomplete="off"><br>
<input type="submit">
</td>
</form>
<? $number= $_POST["number"]; ?>
然后查询我的MySQL表:
$shipmin = 1;
$shipmax=$number;
$uzklausimas ="SELECT * FROM MyGuests WHERE id >= '$shipmin' AND id<= '$shipmax'";
$minmax=mysqli_query($conn,$uzklausimas);
while($ru=mysqli_fetch_assoc($minmax)){
echo "$ru[id] <br>";
}
但是我的代码不能工作。也许有人能给我一些建议,我需要如何解决这个问题?
发布于 2018-05-31 04:06:30
是否在此行之前初始化数据库连接($conn)?
$minmax=mysqli_query($conn,$uzklausimas);
发布于 2018-06-01 02:45:29
如果我写$shipmax=45;
行,它工作得很好,但是我有从1到45的静态日期。如果我写$shipmax=$number;
,它是不工作的。
发布于 2018-06-01 03:59:26
我的所有代码
<?php
$servername = "localhost";
$username = "xxxxx";
$password = "xxxx";
$dbname = "xxxxx";
$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
$shipmin = 1;
$shipmax=$number;
$uzklausimas ="SELECT * FROM MyGuests WHERE id >= '$shipmin' AND id<='$number'";
$minmax=mysqli_query($conn,$uzklausimas);
while($ru=mysqli_fetch_assoc($minmax)){
echo "$ru[id] <br>";
}
mysqli_close($conn);
?>
<form action="forum.php" method="post">
Name: <input type="text" name="name" autocomplete="off"><br>
<input type="submit">
</td></form>
<? $number= (int)$_POST["name"]; ?>
<?php echo $number; ?>
<br>
你可以看到它的页面是http://ortex.lt/forum.php
https://stackoverflow.com/questions/50612375
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