我的两个文件上传字段无法使用我的更新表单。我可以使用create_form将文件上传到我的服务器并将信息输入到SQL数据库中，但是如果没有收到错误，我就无法进行编辑。文件不上传，信息不会在SQL中更新。请帮忙！
<?php require_once($_SERVER['DOCUMENT_ROOT']."/includes/session.php");?>
<?php require_once($_SERVER['DOCUMENT_ROOT']."/includes/db_connection.php");?>
<?php
session_start();
if($_SESSION["login_user"] != true) {
echo("Access denied!");
exit();
}
?>
<?php require_once($_SERVER['DOCUMENT_ROOT']."/includes/functions.php");?>
<?php require_once($_SERVER['DOCUMENT_ROOT']."/includes/validation_functions.php");?>
<?php find_selected_event_page(); ?>
<?php
if (!$current_event) {
// page ID was missing or invalid or
// page couldn't be found in database
redirect_to("manage_content.php");
}
?>
<?php
if (isset($_POST['submit'])) {
// Process the form
// validations
$required_fields = array("visible");
validate_presences($required_fields);
if (empty($errors)) {
// Perform Update
$id = $current_event["id"];
$visible = mysql_prep($_POST["visible"]);
$homepage = mysql_prep($_POST["homepage"]);
$fa_id = mysql_prep($_POST["fa_id"]);
$title = mysql_prep($_POST["title"]);
$caption = mysql_prep($_POST["caption"]);
$url = mysql_prep($_POST["url"]);
$month = mysql_prep($_POST["month"]);
$date = mysql_prep($_POST["date"]);
$year = mysql_prep($_POST["year"]);
$summary = mysql_prep($_POST["summary"]);
$full_text = mysql_prep($_POST["full_text"]);
$image = rand(1000,100000)."-".$_FILES['image']['name'];
$image_loc = $_FILES['image']['tmp_name'];
$image_size = $_FILES['image']['size'];
$image_type = $_FILES['image']['type'];
$image_folder="images/";
$file = rand(1000,100000)."-".$_FILES['file']['name'];
$file_loc = $_FILES['file']['tmp_name'];
$file_size = $_FILES['file']['size'];
$file_type = $_FILES['file']['type'];
$file_folder="files/";
$final_image=str_replace(' ','-',$new_image_name);
$final_file=str_replace(' ','-',$new_file_name);
if($_FILES) {
unlink("images/".$current_event['image']);
move_uploaded_file($image_loc,$image_folder.$final_image);
unlink("files/".$current_event['file']);
move_uploaded_file($file_loc,$file_folder.$final_file); }
else
{
// if no image selected the old image remain as it is.
$final_image = $current_event['image']; // old image from database
$fine_file = $current_event['file']; // old image from database
}
$query = "UPDATE `events` SET ";
$query .= "`visible` = '{$visible}', ";
$query .= "`homepage` = '{$homepage}', ";
$query .= "`fa_id` = '{$fa_id}', ";
$query .= "`title` = '{$title}', ";
$query .= "`caption` = '{$caption}', ";
$query .= "`url` = '{$url}', ";
$query .= "`month` = '{$month}', ";
$query .= "`date` = '{$date}', ";
$query .= "`year` = '{$year}', ";
$query .= "`summary` = '{$summary}', ";
$query .= "`full_text` = '{$full_text}', ";
$query .= "`image` = '{$final_image}', ";
$query .= "`image_type` = '{$image_type}', ";
$query .= "`image_size` = '{$image_new_size}' ";
$query .= "`file` = '{$final_file}', ";
$query .= "`file_type` = '{$file_type}', ";
$query .= "`file_size` = '{$file_new_size}' ";
$query .= "WHERE `events`.`id` = {$id} ";
$query .= "LIMIT 1";
$result = mysqli_query($connection, $query);
if ($result && mysqli_affected_rows($connection)) {
// Success
echo "<pre>".$query."</pre>";
$_SESSION["message"] = "Item updated.";
redirect_to("manage_content.php");
} else {
// Failure
//$_SESSION["message"] = "Item creation failed.";
//redirect_to("new_news.php");
echo "Error: " . $query . "<br>" . $result->error;
}
}
} else {
// This is probably a GET request
} // end: if (isset($_POST['submit']))
?>
这是错误：
Error: UPDATE events SET visible = 'Y', homepage = 'Y', fa_id = '460463', title = 'Event', caption = 'Event Caption', url = '', month = '1', date = '', year = '2017', summary = 'Support event.', full_text = 'Join event', image = '', image_type = '', image_size = '' file = '', file_type = '', file_size = '' WHERE events.id = 1 LIMIT 1