MySQL插入到表中不插入

Question

我是新来的PHP和MYSQL试图学习和正在进行的项目。我正在关注个人资料照片上的代码教程，我正在尝试上传由特定用户ID上传的多张照片。它可以很好地上传到文件目标，但是我遇到的问题是将它存储到数据库中。

这里是我的upload.php的

<?php 
session_start(); 

//connection to database 
include_once('dbh.inc.php'); 
$id = $_SESSION['u_id']; 

if(isset($_POST['submit'])){ 
//getting the file 
$file = $_FILES['file']; 

//file info 
$fileName = $_FILES['file']['name']; 
$fileTmpName = $_FILES['file']['tmp_name']; 
$fileSize = $_FILES['file']['size']; 
$fileError = $_FILES['file']['error']; 
$fileType = $_FILES['file']['type']; 

$fileExt = explode('.',$fileName); 
$fileActualExt = strtolower(end($fileExt)); 

//allowed formats 
$allowed = array('jpg','jpeg','png'); 

//check if the format uploaded is allowed 
if(in_array($fileActualExt,$allowed)){ 
    if($fileError===0){ 
     if($fileSize < 1000000){ 
      //setting up for a new file name 
      $fileNameNew = $id.".".$fileName.".".$fileActualExt; 
      $fileDestination = 'uploads/' . $fileNameNew; 
      move_uploaded_file($fileTmpName,$fileDestination); 
      //inserting into database 
      $sql = "INSERT INTO imageuploads (image,uid_fk) VALUES ('$fileNameNew','$id')"; 
      mysqli_query($conn,$sql); 
      header("Location: ../artsy.php?uploadsuccess"); 
     }else{ 
      echo "This file is too large"; 
     } 
    }else{ 
     echo "There was an error uploading this file"; 
    } 
}else{ 
    echo "You cannot upload files of this type"; 
} 
} 

的imageuploads数据库包含“img_id”这是自动递增，“图像”，这是一个varchar将包含新的文件名，“uid_fk”，这是一个引用用户标识的外键标识。

我没有收到任何错误，但没有创建新行，但是当我在SQL本地主机上运行它时，它很好，并创建了一个新行。

Answer 1

这里是我的榜样如何上传多张图片： https://www.youtube.com/watch?v=GRwMjRNQx6k

下面的代码如何上传多张图片（工作示例）：

<?php 
session_start(); 

// dont show errors 
error_reporting(0); 

// allow big files 
ini_set('post_max_size','400M'); 
ini_set('upload_max_filesize','200M'); 

// database 
$mdatabase = 'test'; 
$muser = 'root'; 
$mpass = 'toor'; 
$mhost = 'localhost'; 
$mport = 3306; 

// connect to mysql with PDO function 
function Conn(){ 
    global $mhost,$mport,$muser,$mpass,$mdatabase; 
    $connection = new PDO('mysql:host='.$mhost.';port='.$mport.';dbname='.$mdatabase.';charset=utf8', $muser, $mpass); 
    // don't cache query 
    $connection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); 
    // show warning text 
    $connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING); 
    // throw error exception 
    $connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
    // don't colose connecion on script end 
    $connection->setAttribute(PDO::ATTR_PERSISTENT, false); 
    // set utf for connection utf8_general_ci or utf8_unicode_ci 
    $connection->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAMES 'utf8' COLLATE 'utf8_general_ci'"); 
    return $connection; 
} 

function saveLink($link, $id = 0){ 
    global $db; // allow mysql connection from global variables 
    if (!empty($link)) { 
     $link = htmlentities($link,ENT_QUOTES,'UTF-8'); 
     $r = $db->query("INSERT INTO imageuploads (image,uid_fk) VALUES ('$link','$id')"); 
     // last inserted id if you had auto increment primary key id (int or bigint) 
     $id = $db->lastInsertId(); 
     return $id; 
    }else{ 
     return 0; 
    } 
} 

// db connection 
$db = Conn(); 

//connection to database 
$gid = $_SESSION['u_id'] = 777; 


//inserting into database 
// $sql = "INSERT INTO imageuploads (image,uid_fk) VALUES ('$fileNameNew','$id')"; 

// echo "<pre>"; 
// print_r($_FILES); 
// 1 MB = 1024 KB = 1 048 576 Bytes = 8 388 608 bitów 
$maxsizemb = 1024 * 1024 * 8; 
$i = 1; 
mkdir("galeria/".$gid, 0755, true); 
foreach ($_FILES['files']['type'] as $key => $value) { 
    if(($value == "image/png") || ($value == "image/jpg") || ($value == "image/gif") || ($value == "image/jpeg")){ 
     //echo $value.$_FILES['files']['name'][$key]; 
     $tmp = $_FILES['files']['tmp_name'][$key];  
     $size = $_FILES['files']['size'][$key]; // bytes 
     $name = $_FILES['files']['name'][$key];   
     $temporary = explode(".", $_FILES["files"]["name"][$key]); 
     $ext = end($temporary); 
     if ($size < $maxsizemb) { 
      $fileto = "galeria/".$gid."/".md5(microtime()).".".$ext; 
      move_uploaded_file($tmp, $fileto); 
      saveLink($fileto, $gid); 
      $all[$i] = $fileto; 
     }else{ 
      echo 'Zbyt duży plik (max 1 MB)'; 
     } 
    } 
    $i++;  
} 
?> 
<form method="post" action="" enctype="multipart/form-data"> 
    <label>Only JPG</label> 
    <input type="file" name="files[]" multiple="true" accept="image/*"><br> 
    <!-- or all files --> 
    <label>All images</label> 
    <input type="file" name="files[]" multiple="true"><br> 
    <input type="submit" name="upload" value="UPLOAD"> 
</form> 

和MySQL表（数据库名称：测试）

-- phpMyAdmin SQL Dump 
-- version 4.7.3 
-- https://www.phpmyadmin.net/ 
-- 
-- Host: localhost 
-- Czas generowania: 25 Wrz 2017, 07:49 
-- Wersja serwera: 10.1.25-MariaDB 
-- Wersja PHP: 5.6.31 

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO"; 
SET AUTOCOMMIT = 0; 
START TRANSACTION; 
SET time_zone = "+00:00"; 


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; 
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; 
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */; 
/*!40101 SET NAMES utf8mb4 */; 

-- 
-- Baza danych: `test` 
-- 

-- -------------------------------------------------------- 

-- 
-- Struktura tabeli dla tabeli `imageuploads` 
-- 

CREATE TABLE `imageuploads` (
    `id` bigint(21) NOT NULL, 
    `image` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '', 
    `uid_fk` bigint(21) NOT NULL DEFAULT '0', 
    `time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- 
-- Indeksy dla zrzutów tabel 
-- 

-- 
-- Indexes for table `imageuploads` 
-- 
ALTER TABLE `imageuploads` 
    ADD PRIMARY KEY (`id`); 

-- 
-- AUTO_INCREMENT for dumped tables 
-- 

-- 
-- AUTO_INCREMENT dla tabeli `imageuploads` 
-- 
ALTER TABLE `imageuploads` 
    MODIFY `id` bigint(21) NOT NULL AUTO_INCREMENT;COMMIT; 

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */; 
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */; 
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;