【发布时间】：2018-10-27 18:09:41
【问题描述】：
我有问题。我找到了多个图像的图像上传脚本。我对其进行了编辑以适合我的项目并且它可以工作。只有1个问题。如果您以纵向模式拍摄照片，则照片会旋转，因为您将相机旋转。 Windows 会自动调整它，因此您不会在操作系统中注意到它。如果我上传它，只有 apache 不会在页面上旋转它。前段时间我在一个更简单的项目上也遇到了这个问题。我为它制作了一个小脚本来检查 exif 数据中的方向，但这次我似乎无法让它工作，我不知道什么时候运行我的旧代码。 这是我的代码。 fixexif部分是旋转部分
<?php
class UploadImageResize
{
//If you face any errors, increase values of "post_max_size", "upload_max_filesize" and "memory_limit" as required in php.ini
//Some Settings
private $ThumbSquareSize = 100; //Thumbnail will be 200x200
private $BigImageMaxSize = 2000; //Image Maximum height or width
private $ThumbPrefix = "thumb_"; //Normal thumb Prefix
private $DestinationDirectory; //Upload Directory ends with / (slash)
private $Quality = 90;
private $Image;
//ini_set('memory_limit', '-1'); // maximum memory!
public function __construct($tripname)
{
$this->DestinationDirectory = 'res/img/Gallery/'.$tripname.'/';
mkdir($this->DestinationDirectory, 0775);
foreach ($_FILES as $file) {
// some information about image we need later.
$ImageName = $file['name'];
$ImageSize = $file['size'];
$TempSrc = $file['tmp_name'];
$ImageType = $file['type'];
if (is_array($ImageName)) {
$c = count($ImageName);
echo '<ul>';
for ($i = 0; $i < $c; $i++) {
$processImage = true;
$RandomNumber = rand(0, 9999999999); // We need same random name for both files.
if (!isset($ImageName[$i]) || !is_uploaded_file($TempSrc[$i])) {
echo '<div class="error">Error occurred while trying to process <strong>' . $ImageName[$i] . '</strong>, may be file too big!</div>'; //output error
} else {
//Validate file + create image from uploaded file.
switch (strtolower($ImageType[$i])) {
case 'image/png':
$this->setImage(imagecreatefrompng($TempSrc[$i]));
break;
case 'image/gif':
$this->setImage(imagecreatefromgif($TempSrc[$i]));
break;
case 'image/jpeg':
case 'image/pjpeg':
$this->setImage(imagecreatefromjpeg($TempSrc[$i]));
break;
default:
$processImage = false; //image format is not supported!
}
//get Image Size
list($CurWidth, $CurHeight) = getimagesize($TempSrc[$i]);
//Get file extension from Image name, this will be re-added after random name
$ImageExt = substr($ImageName[$i], strrpos($ImageName[$i], '.'));
$ImageExt = str_replace('.', '', $ImageExt);
//Construct a new image name (with random number added) for our new image.
$NewImageName = $RandomNumber . '.' . $ImageExt;
//Set the Destination Image path with Random Name
$thumb_DestRandImageName = $this->DestinationDirectory . $this->ThumbPrefix . $NewImageName; //Thumb name
$DestRandImageName = $this->DestinationDirectory . $NewImageName; //Name for Big Image
//Resize image to our Specified Size by calling resizeImage function.
if ($processImage && $this->resizeImage($CurWidth, $CurHeight, $this->BigImageMaxSize, $DestRandImageName, $this->getImage(), $this->Quality, $ImageType[$i])) {
//Create a square Thumbnail right after, this time we are using cropImage() function
if (!$this->cropImage($CurWidth, $CurHeight, $this->ThumbSquareSize, $thumb_DestRandImageName, $this->getImage(), $this->Quality, $ImageType[$i])) {
echo 'Error Creating thumbnail';
}
} else {
echo '<div class="error">Error occurred while trying to process <strong>' . $ImageName[$i] . '</strong>! Please check if file is supported</div>'; //output error
}
}
}
echo '</ul>';
}
}
}
private function fixExif($filename)
{
$exif = exif_read_data($filename);
if(!empty($exif['Orientation'])) {
$ort = $exif['Orientation'];
switch ($ort) {
case 1: // nothing
break;
case 2: // horizontal flip
$this->setImage(imageflip($filename, 1));
break;
case 3: // 180 rotate left
$this->setImage(imagerotate($filename, 180, 0));
break;
case 4: // vertical flip
$this->setImage(imageflip($filename, 2));
break;
case 5: // vertical flip + 90 rotate right
$this->setImage(imageflip($filename, 2));
$this->setImage(imagerotate($this->getImage(), -90, 0));
break;
case 6: // 90 rotate right
$this->setImage(imagerotate($this->getImage(), -90, 0));
break;
case 7: // horizontal flip + 90 rotate right
$this->setImage(imageflip($this->getImage(), 1));
$this->setImage(imagerotate($this->getImage(), -90, 0));
break;
case 8: // 90 rotate left
$this->setImage(imagerotate($this->getImage(), 90, 0));
break;
}
}
}
// This function will proportionally resize image
public function resizeImage($CurWidth,$CurHeight,$MaxSize,$DestFolder,$SrcImage,$Quality,$ImageType)
{
//Check Image size is not 0
if($CurWidth <= 0 || $CurHeight <= 0)
{
return false;
}
//Construct a proportional size of new image
$ImageScale = min($MaxSize/$CurWidth, $MaxSize/$CurHeight);
$NewWidth = ceil($ImageScale*$CurWidth);
$NewHeight = ceil($ImageScale*$CurHeight);
if($CurWidth < $NewWidth || $CurHeight < $NewHeight)
{
$NewWidth = $CurWidth;
$NewHeight = $CurHeight;
}
$NewCanves = imagecreatetruecolor($NewWidth, $NewHeight);
// Resize Image
if(imagecopyresampled($NewCanves, $SrcImage,0, 0, 0, 0, $NewWidth, $NewHeight, $CurWidth, $CurHeight))
{
switch(strtolower($ImageType))
{
case 'image/png':
imagepng($this->getImage(),$DestFolder);
break;
case 'image/gif':
imagegif($this->getImage(),$DestFolder);
break;
case 'image/jpeg':
case 'image/pjpeg':
imagejpeg($this->getImage(),$DestFolder,$Quality);
break;
default:
return false;
}
if(is_resource($NewCanves)) {
imagedestroy($NewCanves);
}
return true;
}
}
//This function corps image to create exact square images, no matter what its original size!
public function cropImage($CurWidth,$CurHeight,$iSize,$DestFolder,$SrcImage,$Quality,$ImageType)
{
//Check Image size is not 0
if($CurWidth <= 0 || $CurHeight <= 0)
{
return false;
}
//abeautifulsite.net has excellent article about "Cropping an Image to Make Square"
//http://www.abeautifulsite.net/blog/2009/08/cropping-an-image-to-make-square-thumbnails-in-php/
if($CurWidth>$CurHeight)
{
$y_offset = 0;
$x_offset = ($CurWidth - $CurHeight) / 2;
$square_size = $CurWidth - ($x_offset * 2);
}else{
$x_offset = 0;
$y_offset = ($CurHeight - $CurWidth) / 2;
$square_size = $CurHeight - ($y_offset * 2);
}
$NewCanves = imagecreatetruecolor($iSize, $iSize);
if(imagecopyresampled($NewCanves, $SrcImage,0, 0, $x_offset, $y_offset, $iSize, $iSize, $square_size, $square_size))
{
switch(strtolower($ImageType))
{
case 'image/png':
imagepng($NewCanves,$DestFolder);
break;
case 'image/gif':
imagegif($NewCanves,$DestFolder);
break;
case 'image/jpeg':
case 'image/pjpeg':
imagejpeg($NewCanves,$DestFolder,$Quality);
break;
default:
return false;
}
if(is_resource($NewCanves)) {
imagedestroy($NewCanves);
}
return true;
}
}
public function getImage()
{
return $this->Image;
}
public function setImage($Image)
{
$this->Image = $Image;
}
}
【问题讨论】：
标签： php image upload jpeg exif