从手机上传时图像旋转90度？ PHP

时间：2015-11-23 04:30:19

标签： php html live

我有一个网站，用户可以从手机上传照片，但是从手机上传的所有照片在上传时都显示在左侧90度。实时网站为www.uneraportoj.com。我现在的问题是exeif，但我尝试使用插件，但无法正常工作。建议任何帮助。

共享脚本代码是：

 <?php

    include_once('help.php');

    if(isset($_POST['submit'])){    
        $title = $_POST['title'];
        $content = $_POST['content'];
        $posted = $_POST['posted'];
        $date = date("Y-m-d H:i:s");
        $ip = $_SERVER["REMOTE_ADDR"];
        $rand = rand(1,1000000);

        if(empty($title)){
            echo "Titulli eshte bosh.";
        }else if(empty($content)){
            echo "Permbajtja eshte bosh.";
        }else if(empty($_FILES['image']['name'])){
            echo "Imazhi eshte bosh.";
        }else if (
                ($_FILES['image']['type'] == 'image/gif') 
                || ($_FILES['image']['type'] == 'image/jpeg') 
                || ($_FILES['image']['type'] == 'image/pjpeg') 
                || ($_FILES['image']['type'] == 'image/png') 
                && ($_FILES['image']['size'] < 200000)
                ){

                    $part = $rand.'_'.$_FILES['image']['name'];

                    if ($_FILES["image"]["error"] > 0) {
                        echo "return code" . $_FILES['image']['error'];

                        //Code from plugin start
                        if($_FILES['image']){
                            // If the image is jpg and has orientation data, make sure we orientate correctly before uploading
                            if($image->exif('Orientation'))
                                $image = orientate($image, $image->exif('Orientation'));
                        }

                    }else if(move_uploaded_file($_FILES['image']['tmp_name'],'images/'. $part.'')){

                        if(empty($posted)){
                            $posted = 'Anonim';
                        }

                        $sql = "INSERT INTO ***(title, content, date, image, posted, ip) VALUES (:title, :content, :date, :image, :posted, :ip)";
                        $query = $db->prepare($sql);
                        $results = $query->execute(array(
                            ':title' => htmlentities ($title),
                            ':content' => htmlentities ($content),
                            ':date' => $date,
                            ':image' => $part,
                            ':posted' => htmlentities ($posted),
                            ':ip' => $ip
                        ));
                        echo "<div id='ok'>Lajmi u raportua me sukses. Kontrollojeni <a href='index.php'>ketu</a> .</div>";

                    }
                }else{
                    echo "<div id='ok'>Imazhi nuk eshte i sakte. (Vetem jpg/png)</div>";
                }

    }
?>

插件代码：

    <?php /**
 * Orientate an image, based on its exif rotation state
 * 
 * @param  Intervention\Image\Image $image
 * @param  integer $orientation Image exif orientation
 * @return Intervention\Image\Image
 */

 $image = $_FILES['image'];

function orientate($image, $orientation)
{
    switch ($orientation) {

        // 888888
        // 88    
        // 8888  
        // 88    
        // 88    
        case 1:
            return $image;

        // 888888
        //     88
        //   8888
        //     88
        //     88
        case 2:
            return $image->flip('h');


        //     88
        //     88
        //   8888
        //     88
        // 888888
        case 3:
            return $image->rotate(180);

        // 88    
        // 88    
        // 8888  
        // 88
        // 888888
        case 4:
            return $image->rotate(180)->flip('h');

        // 8888888888
        // 88  88    
        // 88        
        case 5:
            return $image->rotate(-90)->flip('h');

        // 88        
        // 88  88    
        // 8888888888
        case 6:
            return $image->rotate(-90);

        //         88
        //     88  88
        // 8888888888
        case 7:
            return $image->rotate(-90)->flip('v');

        // 8888888888
        //     88  88
        //         88
        case 8:
            return $image->rotate(90);

        default:
            return $image;
    }
}
?>

2 个答案:

答案 0 :(得分：1)

我发现这个youtube视频对exif数据的图像oriantaion非常有帮助 看看这个 https://www.youtube.com/watch?v=HjHSgGFqAtE 

print 'exif orientation';

$original_filename = 'car1.jpg';
$exif_data = exif_read_data($original_filename);

// displays exif data
// print '<pre>';
// print_r($exif_data);
// print '<pre>';


$orientation = orientation($exif_data);
$degrees = orientation_flag($orientation);
print '<pre>';
print_r($orientation);
print '</pre>';

print '<pre>';
print_r($degrees);
print '</pre>';

$image_data = imagecreatefromjpeg($original_filename);
$image_rotate = imagerotate($image_data, $degrees, 0);

$rotated_filename = 'rotated_' . $original_filename;
imagejpeg($image_rotate, $rotated_filename);
imagedestroy($image_data);
imagedestroy($image_rotate);


// finds orientation value in exif data
function orientation($exif_data) {
  // search array for orientation
  foreach($exif_data as $key => $val) {
    // print '<pre>';
    // print_r($key);
    // print '<pre>';
    if(strtolower($key) == 'orientation') {
      return $val;
    }
  }
}


// gets orientation data and returns degrees needed for rotation
function orientation_flag($orientation) {
 switch($orientation):
  case 1:
    return 0;
  case 8:
    return 90;
  case 3:
    return 180;
  case 6:
    return 270;
  endswitch;
 }

?>


 <img src="car1.jpg" width="400"/>
 <br>
 <img src="rotated_car1.jpg" width="400"/>

答案 1 :(得分：0)

您在if（error）语句下进行了函数调用，这意味着只有在出现错误时才会旋转。在图像通过错误检查后将其移动到最终位置。

                if ($_FILES["image"]["error"] > 0) {
                    echo "return code" . $_FILES['image']['error'];

                }else if(move_uploaded_file($_FILES['image']{'tmp_name'],'images/'. $part.'')){

                    if(file_exists('images/'. $part.'')){
                       /* read exif data (returns it as an array) */
                       $exif_read = exif_read_data('images/'. $part.'');

                       /* if exif contains orientation property (some images don't) */
                       if(!empty($exif_read['Orientation'])){
                            $orientation_data = $exif_read['Orientation'];
                            $image = orientate($image, $Orientation_data);
                    }

修改

我复制并粘贴了用于图片上传的确切代码。对于我正在做的事情，我只需要担心方向3,6和8，但如果您认为自己需要它们，可以添加其余部分。在imagerotate（）之后使用PHP的imageflip（）函数（阅读如何使用here）

<?php

require("../db_credentials.php");

if($_FILES['file']['name']){
  $name = htmlspecialchars($_FILES['file']['name']);
  $ext = end((explode(".", $name)));
  $ext = strtolower($ext);

  //if no errors...
  if(!$_FILES['file']['error']){
    //now is the time to modify the future file name and validate the file
    $new_file_name = date('ymdHisu'). ".". $ext;

    if($_FILES['file']['size'] > (6144000)){
      $valid_file = false;
      echo 'Oops!  Your file\'s size is to large.';
    }
    elseif($ext !== "jpg" && $ext !== "png" && $ext !== "jpeg" && $ext != "gif" && $ext !== "bmp") {
      $valid_file = false;
      echo "Your file must be in jpg, jpeg, png, gif, or bmp formats.";
    }
    else{
      $valid_file = true;
    }

    //if the file has passed the test
    if($valid_file){
      //move it to where we want it to be
      move_uploaded_file($_FILES['file']['tmp_name'], 'images/'.$new_file_name);

      $exif_read = exif_read_data("images/".$new_file_name);
      if(!empty($exif_read['Orientation'])){
        $orientation_data = exif_read_data("images/".$new_file_name)['Orientation'];
      }
      if(isset($orientation_data) && $orientation_data !== 1){
    $path = "../images/". $new_file_name;
        $buffer = ImageCreateFromJPEG($path);
       $exif = exif_read_data($path);
        if(!empty($exif['Orientation'])){
          switch($exif['Orientation']){
            case 8:
              $buffer = imagerotate($buffer,90,0);
              break;
            case 3:
              $buffer = imagerotate($buffer,180,0);
              break;
            case 6:
              $buffer = imagerotate($buffer,-90,0);
              break;
          }
          imagejpeg($buffer, $path, 90);
        }
      }
    }
  }
  //if there is an error...
  else
  {
    //set that to be the returned message
    echo 'Ooops!  Your upload triggered the following error:  '.$_FILES['file']['error'];
  }
}

?>
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