Question

<?php

include 'header.php';

$id = $_GET['id'];


?>

                                        <form action="" method="post" id="validation-form" class="form-horizontal" enctype='multipart/form-data' >

                                            <div class="control-group">
                                                <label class="control-label" for="file">Change Image</label>
                                                <div class="controls">
                                                    <input type="file"  name="file" id="imgae" value="<?php echo $image;?>">
                                                </div>                                                
                                            </div>

                                            <div class="control-group">
                                                <label class="control-label" for="name">Change Name</label>
                                                <div class="controls">
                                                    <input type="text" class="input-large" name="name" id="name" value="<?php echo $name;?>">
                                                </div>
                                            </div>

                                            <div class="control-group">
                                                <label class="control-label" for="message">Change Description</label>
                                                <div class="controls">
                                                    <textarea class="span4" name="message" id="message" rows="4"><?php echo $message;?></textarea>
                                                </div>
                                            </div>

                                            <div class="controls">
                                               <input type="hidden" name="id" value=<?php echo $_GET['id'];?>>
                                                <input type='submit' class="btn btn-danger btn" name='but_upload' value="Submit" >
                                                <!--                              <button type="submit" class="btn btn-danger btn">Validate</button>&nbsp;&nbsp;-->
                                                <a href="elements.php" class="btn"> back </a>&nbsp;&nbsp;&nbsp;

用于编辑数据的代码

    $time_stamp = time();
        $image = $_FILES['file']['name'];
        $image = $time_stamp . '_' . $image;
        $target_dir = "img/upload/";
        $target_file = $target_dir . basename($_FILES["file"]["name"]);
        $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
        $extensions_arr = array("jpg","jpeg","png","gif");
        $location = 'img/upload/'.$image;
        if( in_array($imageFileType,$extensions_arr) ){
            move_uploaded_file($_FILES['file']['tmp_name'],'img/upload/'.$image);
        }


     $name = $_POST['name'];
    $message = $_POST['message'];
     $query = "insert into images(image,location,name,message) values('$image', '$location', '$name', '$message')";
     mysqli_query($con,$query) or die(mysqli_error($con));

    echo "<script>document.location.href='elements.php?msg=Updated'</script>";

     <!-- -->

用于更新数据的代码

     $name = $_POST['name'];
    $message = $_POST['message'];
     $query = "UPDATE images SET image = '$image', location = '$location', name = '$name', message = '$message' where id = '$id'";
     mysqli_query($con,$query);


    echo "<script>document.location.href='elements.php?msg=Updated' </script>"  ;

}

 include 'footer.php'; ?>

这是用于向数据库中添加和更新数据的代码。使用此代码，我可以将数据添加或编辑到数据库中。我无法将数据成功编辑到数据库中，但是问题是我尝试更新数据时未在插入字段中显示数据，因此请在更新数据时帮助在插入字段中显示数据。

Answer 1

<?php


$id = $_GET['id'];
$sql = "SELECT * FROM users WHERE id ='1'";
$result =mysqli_query($con,$sql);
$row = mysqli_fetch_assoc($result);
  ?>
By using this code on the top of the page then we can show the values in the fields and able to update the existing data

$ row = mysqli_fetch_assoc（$ result）;帮助从数据库中搜索并提供要获取的行并显示通过在数据库中给定的行名替换为行名，数据库中将显示数据库中的数据

如何将值显示到数据库的字段中

1 个答案: