TinyMCE在PHP旋转后显示宽度和高度错误的图像

问题描述

此PHP脚本正在处理上载并与TinyMCE编辑器一起使用。但是，如果图像具有EXIF方向元数据，则会出现问题。图像已正确旋转，但TinyMCE显示的图像的宽度和高度都很高。我需要将新的宽度和高度传递给TinyMCE，但不确定如何做？

<?PHP
//error_reporting(0);
//Only these origins are allowed to upload images *
    $accepted_origins = array("http://localhost","http://127.0.0.1","http://192.168.1.1","http://example.com");

    // Set the destination folder for image
    $month = strtolower(date('M'));
    $year = date('Y');
    $newspath = "img/news/";

    if (!is_dir("$newspath/$year/$month")) {
    mkdir("$newspath/$year/$month",0777,true);
}
    $imageFolder = "$newspath/$year/$month/";

    reset ($_FILES);
    $temp = current($_FILES);
    if (is_uploaded_file($temp['tmp_name'])){
        if (isset($_SERVER['HTTP_ORIGIN'])) {
            // same-origin requests won't set an origin. If the origin is set,it must be valid.
            if (in_array($_SERVER['HTTP_ORIGIN'],$accepted_origins)) {
                header('Access-Control-Allow-Origin: ' . $_SERVER['HTTP_ORIGIN']);
            } else {
                header("HTTP/1.1 403 Origin Denied");
                return;
            }
        }

        /*
            If your script needs to receive cookies,set images_upload_credentials : true in
            the configuration and enable the following two headers.
        */
        // header('Access-Control-Allow-Credentials: true');
        // header('P3P: CP="There is no P3P policy."');

        // Rewrite bad filenames
        $temp['name'] = preg_replace(array('/\s+/','/[^a-zA-Z0-9\-\._]/','/\.(?=.*\.)/','/[\-]+/','/[_]+/'),array('_','','_','_'),strtolower($temp['name']));

        // Verify extension
        if (!in_array(strtolower(pathinfo($temp['name'],PATHINFO_EXTENSION)),array("gif","jpg","jpeg","png"))) {

                header("HTTP/1.1 400 Invalid extension.");
                return;
        }

        // Accept upload if there was no origin,or if it is an accepted origin
        $tempname = $temp['name'];
        $filetowrite = $imageFolder . $tempname;
        $randompin = mt_rand(1000,9999);
        // If file name already exists rename
        if (file_exists($filetowrite)) {
        $tempname =  $randompin . $tempname;
        $filetowrite = $imageFolder . $tempname;
        }

        // If EXIF Orientation data exists,rotate image as required
        $savetmpname = $temp['tmp_name'];
        function correctimageOrientation($savetmpname) {
            if (function_exists('exif_read_data')) {
                $exif = exif_read_data($savetmpname);
                if($exif && isset($exif['Orientation'])) {
                    $orientation = $exif['Orientation'];
                    if($orientation != 1){
                        $img = imagecreatefromjpeg($savetmpname);
                        $deg = 0;
                        switch ($orientation) {
                            case 3:
                                $deg = 180;
                                break;
                            case 6:
                                $deg = 270;
                                break;
                            case 8:
                                $deg = 90;
                                break;
                        }
                        if ($deg) {
                            $img = imagerotate($img,$deg,0);       
                        }
                        //Rewrite rotated image back to the disk
                        imagejpeg($img,$savetmpname,75);
                    } // if there is some rotation necessary
                } // if have the exif orientation info
            } // if function exists     
        }
        // Move uploaded files and rotate if required
        move_uploaded_file($savetmpname,$filetowrite);
        correctimageOrientation($filetowrite);
        //}
        // Respond to the successful upload with JSON.
        // Use a location key to specify the path to the saved image resource.
        // { location : '/your/uploaded/image/file'}
        // echo json_encode(array('location' => $filetowrite));

        $passpath = $year.'/'.$month.'/'.$tempname;

        echo json_encode(array('location' => $passpath));
    } else {
        // Notify editor that the upload Failed
        header("HTTP/1.1 500 Server Error");
    }
?>

解决方法

我发现了这一点，可以通过将图像旋转90度或270度来交换图像的宽度和高度，这是exif函数：

        // If EXIF Orientation data exists,rotate image as required
        $savetmpname = $temp['tmp_name'];
        function correctImageOrientation($savetmpname) {
            if (function_exists('exif_read_data')) {
                $exif = exif_read_data($savetmpname);
                if($exif && isset($exif['Orientation'])) {
                    $orientation = $exif['Orientation'];
                    if($orientation != 1){
                        $img = imagecreatefromjpeg($savetmpname);
                        $imgwidth = imagesx($img);
                        $imgheight = imagesy($img);
                        //$imgwidth = ImagesX($img);
                        //$imgheight = ImagesY($img);
                        $deg = 0;
                        switch ($orientation) {
                            case 3:
                                $deg = 180;
                                $newimgwidth = $imgwidth;
                                $newimgheight = $imgheight;
                                break;
                            case 6:
                                $deg = 270;
                                $newimgwidth = $imgheight;
                                $newimgheight = $imgwidth;
                                break;
                            case 8:
                                $deg = 90;
                                $newimgwidth = $imgheight;
                                $newimgheight = $imgwidth;
                                break;
                        }
                        if ($deg) {
                            $img = imagerotate($img,$deg,0);  
                            $img = imagecopyresized($img,$savetmpname,$newimgwidth,$newimgheight,$imgwidth,$imgheight); 
                        }
                        // then rewrite the rotated image back to the disk as $filename
                        imagejpeg($img,75);