PHP - 图片上传

Question

老实说，我不是很擅长 php，所以我正在寻求帮助。

这是图片上传的代码

PHP

session_start();
require_once('../odliczanie/connect.php');
$prof = basename($_FILES["file"]["name"]);
$uploadOk = 1;
if($prof != ""){
    $target_dir = "../odliczanie/images/prof/";
    $target_file = $target_dir . basename($_FILES["file"]["name"]);
    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
    // Check if image file is a actual image or fake image
    if(isset($_POST["submit"])) {
        $check = getimagesize($_FILES["file"]["tmp_name"]);
        if($check !== false) {
            //echo "Plik jest zdjęciem - " . $check["mime"] . ".";
            $uploadOk = 1;
        } else {
            $_SESSION['how'] = false;
            $_SESSION['msg'] = "Plik nie jest zdjęciem";
            mysqli_close($connection);
            //header("Location: ". $_SESSION['current_page']);
        }
    }
    // Check if file already exists
    if (file_exists($target_file)) {
            $_SESSION['how'] = false;
        $_SESSION['msg'] = "Nazwa pliku jest już zajęta";
        mysqli_close($connection);
        //header("Location: ". $_SESSION['current_page']);
    }
    // Check file size
    if ($_FILES["file"]["size"] > 104858) {
        $_SESSION['how'] = false;
        $_SESSION['msg'] = "Za duży rozmiar pliku, max 1MB";
        mysqli_close($connection);
        //header("Location: ". $_SESSION['current_page']);
    }
    // Allow certain file formats
    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" ) {
        $_SESSION['how'] = false;
        $_SESSION['msg'] = "Tylko pliki JPG, JPEG i PNG są obsługiwane";
        mysqli_close($connection);
        //header("Location: ". $_SESSION['current_page']);
    }
    // Check if $uploadOk is set to 0 by an error
    if ($uploadOk == 0) {
        //$_SESSION['e_prof']="Coś było nie tak z tym zdjęciem";
    // if everything is ok, try to upload file
    } else {
        if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_file)) {
        }
    }
} else {
    $_SESSION['how'] = false;
    $_SESSION['msg'] = "error1";
    mysqli_close($connection);
    //header("Location: ". $_SESSION['current_page']);
}
if ($uploadOk==1){
    //Dodajemy boba do bazy
    $email = $_SESSION['email'];
    //here is error
    if($connection->query("UPDATE `prof` SET `prof` = '".$prof."' WHERE `prof`.`osoba` = '".$email."'")){
        $zapytanie = "select * FROM prof WHERE id = '".$email."'";
        $wynik = mysqli_query($connection,$zapytanie);
        $row = mysqli_fetch_assoc($wynik);
        $profdel = $row['prof2'];
        unlink("/odliczanie/prof/images/$profdel");
        if($connection->query("UPDATE `prof` SET `prof2` = '".$prof."' WHERE `prof`.`osoba` = '".$email."'")){
          $_SESSION['how'] = true;
          $_SESSION['msg'] = "Zdjęcie profilowe zapisane pomyślnie";
          mysqli_close($connectionion);
          //header("Location: ". $_SESSION['current_page']);
        }
    }else{
        $_SESSION['how'] = false;
    $_SESSION['msg'] = "Błąd podczas zapisywania zdjęcia profilowego";
    mysqli_close($connection);
    //header("Location: ". $_SESSION['current_page']);
    }
} else {
    $_SESSION['how'] = false;
    $_SESSION['msg'] = "error2";
    mysqli_close($connection);
    //header("Location: ". $_SESSION['current_page']);
}

这里是html表单

HTML

<form method="POST" action="/odliczanie/upload" enctype="multipart/form-data" id="upload" style="padding:16px;">
  <div style="width:300px;height:400px;margin:auto;">
    <? echo "<img id='img' src='/odliczanie/images/prof/$prof' height='300px' width='300px' alt='image preview...'>"; ?><br>
    <input type="file" name="file" id="file" class="inputfile" onchange="previewFile()" />
    <label for="file"><span>Wybierz zdjęcie</span></label><br>
  </div>
  <div class="clearfix">
    <button type="button" class="cancelbtn" onclick="document.getElementById('id02').style.display='none'">Anuluj</button>
      <div style="float:right;">
        <button type="submit" form="form1" value="Submit">Zapisz</button>
      </div>
  </div>
</form>  

有警告信息，我不知道出了什么问题。

警告：mysqli::query()：无法在第 61 行的 /home/kivvi/domains/redrose.pulawy.pl/public_html/odliczanie/upload.php 中获取 mysqli

我在 php.ini 文件中设置了file_uploads = On。

我尝试使用mysqli_query ($ connection, $ sql) 而不是$ connection-> query ($sql)，但它也不起作用。

图像被发送到服务器，但数据库中的记录没有改变。有什么建议吗？

编辑：

connect.php 内容

$connection = mysqli_connect('localhost', 'kivvi_redrose', '**********');
if(!$connection){
  die("Database Connection Failed" . mysqli_error($connection));
}
$select_db = mysqli_select_db($connection, 'kivvi_redrose');
if(!$select_db){
  die("Database Selection Failed" . mysqli_error($connection));
}

Answer 1

请参阅下面的代码。这是我定制的。

剩下的就是你需要Use命名空间类。

也许你可以使用我下面的代码，因为它会上传多个（如果有超过 1 个）图像。您可以将代码编辑到其他文件而不是图像。

要上传的 HTML：

<?php echo $this->uploadfile->getImageUploadHTML('imageupload[]', 1) ;?>

调用你的模型：

$result = $this->uploadImage->upload('imageupload', $_FILES['imageupload'], '/uploads/feedback', 'image');

数据库和输出：

下面的代码将返回一个数组，其中包含有关上传图像的所有信息。使用此数组将 PATH（和任何其他信息）保存到您的数据库中。在您的 HTML 中，您可以在图像 src 中回显 PATH。

上传代码到文件夹：

<?php
/**
 * Created by PhpStorm.
 * User: Ronnie Oosting
 * Date: 15-3-18
 * Time: 11:33
 */

namespace Company\Extension;

/**
 * Class UploadFile
 * @package Company\Extension
 * todo: Add different file types to upload: 'PDF, Audio, ?'
 */
class UploadFile
{

	private $allowedImageType;

	private $maxImageSize;

	private $minImageSize;

	private $baseDir;

	private $maxWidth;

	private $maxHeight;

	/**
	 * UploadFile constructor.
	 * @note: Any other file can be added to be uploaded. Only things which are needed:
	 *      1) Make new global settings in the constructor
	 *      2) Create a new private function which is going to be used for your file type
	 *      3) Use the public function 'upload'. Make sure you send the $filetype
	 *      4) Inside the public function 'upload' create a new 'switch' case statement based on your $filetype.
	 */
	public function __construct()
	{
		/**
		 * Image settings.
		 */
		$this->allowedImageType = [
			'image/jpg',
			'image/png',
			'image/jpeg',
		];
		$this->maxImageSize     = 500000;
		$this->minImageSize     = 1;
		$this->baseDir          = BASE_PATH;
		$this->maxWidth         = 1600;
		$this->maxHeight        = 900;
	}

	/**
	 * @param string $name
	 * @param int    $multiple
	 * @param string $type
	 * @param string $accept
	 *
	 * @return string
	 *
	 * @note: Make sure you add '[]' after the name if the multiuploader is activated ($multiple = 1)
	 */
	public function getImageUploadHTML($name = 'imageupload', $multiple = 0, $type = 'file', $accept = 'image/png, image/jpeg, image/jpg')
	{
		$multiple = ($multiple == 1) ? 'multiple' : '';

		return '<input type="' . $type . '" accept="' . $accept . '" name="' . $name . '" ' . $multiple . '>';
	}

	/**
	 * @param string $file_array_name
	 * @param        $file_array_content
	 * @param null   $dir
	 * @param null   $filetype
	 * @param int    $max_width
	 * @param int    $max_height
	 *
	 * @return bool
	 *
	 * @note: The function will return an array or FALSE. Inside the array you find the filename, which can be stored
	 *        into the database.
	 */
	public function upload($file_array_name = 'file1', $file_array_content = [], $dir = null, $filetype = null, $max_width = 99999, $max_height = 99999)
	{
		$file_array_content = $this->reArrayFiles($file_array_content);
		$result             = [];

		foreach($file_array_content as $file_for_each)
		{
			switch($filetype)
			{
				case 'image':
					$result[] = $this->uploadImage($file_array_name, $file_for_each, $dir, $max_width, $max_height);
					break;
				default:
					return false;
			}
		}

		if( empty($result))
		{
			$result = false;
		}

		return $result;
	}

	/**
	 * @param string $file_array_name
	 * @param        $file_array_content
	 * @param null   $dir
	 * @param        $max_width
	 * @param        $max_height
	 *
	 * @return bool
	 */
	private function uploadImage($file_array_name = 'file1', $file_array_content, $dir = null, $max_width, $max_height)
	{

		/**
		 * Check if the given $_FILES is not empty and if it's an array.
		 * If the file is not valid it will return FALSE.
		 *
		 * Check if directory is given, it it's empty it will return FALSE.
		 */
		$file_array_name = strtolower($file_array_name);

		if( !is_array($file_array_content) || $file_array_content['error'] != 0 || !$dir)
		{
			return false;
		}

		/**
		 * A check on the file type. If the file type is not valid it will return FALSE.
		 */
		if( !in_array($file_array_content['type'], $this->allowedImageType))
		{
			return false;
		}

		/**
		 * Check if file is between the allowed sizes.
		 * If the file is not between the allowed sizes it will return FALSE.
		 */
		if(($file_array_content['size'] > $this->maxImageSize) || $file_array_content['size'] < $this->minImageSize)
		{
			return false;
		}

		/**
		 * Get the file extension.
		 * If the file extension is not valid, it will return FALSE.
		 */
		$file_name      = explode(".", $file_array_content['name']);
		$file_extension = end($file_name);

		if( !$file_extension)
		{
			return false;
		}

		/**
		 * Create the file settings for easier reading and to upload.
		 */
		list($image_width, $image_height) = getimagesize($file_array_content['tmp_name']);

		$file_settings = [
			'tmp_name'  => $file_array_content['tmp_name'],
			'file_name' => date('YmdHis') . '_' . md5($file_array_name) . '_' . rand($this->minImageSize, $this->maxImageSize) . '.' . $file_extension,
			'size'      => $file_array_content['size'],
			'width'     => $image_width,
			'height'    => $image_height,
		];

		/**
		 * Check resolution of file.
		 * Both WIDTH and HEIGHT are being checked, first it will check if the file is not higher than the max size,
		 * second it will check the given input (if it's given). If needed it will crop to the maximum allowed sizes.
		 */
		$set_width  = ($max_width) ? $max_width : $this->maxWidth;
		$set_height = ($max_height) ? $max_height : $this->maxHeight;
		if(($file_settings['width'] > $set_width) || ($file_settings['height'] > $set_height))
		{
			/**
			 * Crop the WIDTH / HEIGHT image. WIDTH is being sent to the function cropImage.
			 */
			$this->cropImage($file_settings['tmp_name'], $this->baseDir . $dir . '/' . $file_settings['file_name'], $set_height);
		}
		else
		{
			/**
			 * Upload the file.
			 * If the file is not uploaded it will return FALSE.
			 */
			if( !move_uploaded_file($file_settings['tmp_name'], $this->baseDir . $dir . '/' . $file_settings['file_name']))
			{
				return false;
			}
		}

		return $file_settings;
	}

	/**
	 * @param $src
	 * @param $dest
	 * @param $max
	 *
	 * @return bool
	 */
	private function cropImage($src, $dest, $max)
	{
		/**
		 * Get size
		 */
		list($width, $height, $source_image_type) = getimagesize($src);

		switch(strtolower($source_image_type))
		{
			case IMAGETYPE_GIF:
				$image = imagecreatefromgif($src);
				break;
			case IMAGETYPE_JPEG:
				$image = imagecreatefromjpeg($src);
				break;
			case IMAGETYPE_PNG:
				$image = imagecreatefrompng($src);
				break;
		}

		/**
		 * Set new sizes
		 */
		$source_aspect_ratio  = $width / $height;
		$desired_aspect_ratio = $max / $max;

		if($source_aspect_ratio > $desired_aspect_ratio)
		{
			$temp_height = $max;
			$temp_width  = ( int ) ($max * $source_aspect_ratio);
		}
		else
		{
			$temp_width  = $max;
			$temp_height = ( int ) ($max / $source_aspect_ratio);
		}

		/**
		 * Create new size
		 */
		$temp_gdim = imagecreatetruecolor($temp_width, $temp_height);
		imagecopyresampled($temp_gdim, $image, 0, 0, 0, 0, $temp_width, $temp_height, $width, $height);

		$x0 = ($temp_width - $max) / 2;
		$y0 = ($temp_height - $max) / 2;

		$desired_gdim = imagecreatetruecolor($max, $max);
		imagecopy($desired_gdim, $temp_gdim, 0, 0, $x0, $y0, $max, $max);
		imagejpeg($desired_gdim, $dest, 98);
		imagedestroy($image);
		imagedestroy($desired_gdim);

		return true;
	}

	/**
	 * @param $file_post
	 *
	 * @return array
	 */
	private function reArrayFiles(&$file_post)
	{
		$file_ary   = array();
		$file_count = count($file_post['name']);
		$file_keys  = array_keys($file_post);

		for($i = 0; $i < $file_count; $i++)
		{
			foreach($file_keys as $key)
			{
				$file_ary[$i][$key] = $file_post[$key][$i];
			}
		}

		return $file_ary;
	}
}