php - 如何使用 mySql 唯一 ID/列名称搜索记录？

Question

以下代码完美运行。它给出预订 ID RRGPGM68

的 hotel url

<?PHP
$con=mysqli_connect("localhost","username","pasword","dbName");
        // Check connection
        if (mysqli_connect_errno()) {
          die ("Failed to connect to MySQL: " . mysqli_connect_error());
        }
$booking_id_serch_text = RRGPGM68;
$searchroute = "select * from booking_tbl where booking_nmbr = '$booking_id_serch_text'";
$result = $con->query($searchroute);
$row = $result->fetch_assoc();
echo 'Hotel URL: '.$row['hotel_url'];
mysqli_close($con);
?>

但我想从文本输入字段中动态分配 booking_id_serch_text。所以我修改了代码如下:

<form action="<?php echo get_permalink();?>" method="post">
    <input type="text" placeholder="Search..." required name="search_text">
    <input type="button" value="search" name="search">
</form>

<?PHP

if($_POST["search"]){
$serch_text = $_POST["search_text"]; 
$con=mysqli_connect("localhost","username","pasword","dbName");
        // Check connection
        if (mysqli_connect_errno()) {
          die ("Failed to connect to MySQL: " . mysqli_connect_error());
        }       
$booking_id_serch_text = $serch_text;
$searchroute = "select * from booking_tbl where booking_nmbr = '$booking_id_serch_text'";
$result = $con->query($searchroute);
$row = $result->fetch_assoc();
echo 'Hotel URL: '.$row['hotel_url'];
mysqli_close($con);
}

?>

但是上面的代码什么也没做。 我怎样才能让它发挥作用？ 此用途存档后，我将添加验证。

Answer 1

<input type="button" /> buttons 

不会提交表单——默认情况下他们什么都不做。它们通常作为 AJAX 应用程序的一部分与 JavaScript 结合使用。

<input type="submit"> buttons 

将在用户点击它们时提交它们所在的表单，除非您使用 JavaScript 另行指定。

所以在这里使用