Imagick::setImageOrientation
(PECL imagick 2, PECL imagick 3)
Imagick::setImageOrientation — Sets the image orientation
说明
public Imagick::setImageOrientation(int
$orientation): boolSets the image orientation.
返回值
成功时返回 true。
范例
示例 #1 Imagick::setImageOrientation()
<?php
//Doesn't appear to do anything
function setImageOrientation($imagePath, $orientationType) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->setImageOrientation($orientationType);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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User Contributed Notes 1 note
orrd101 at yahoo dot com ¶
9 years ago
Be aware that Imagick::setImageOrientation() doesn't actually rotate the image, it just changes the EXIF rotation info that will be saved with the image. In some cases that may be what you want to do, but if you're trying to rotate an image, this probably isn't the way you want to do it. The problem with relying on the EXIF rotation info is that many web browsers ignore and some image viewing software ignore the EXIF information and don't auto-rotate it automatically. This function is best used to correct EXIF rotation information just before saving an image.
To actually rotate an image, use Imagick::rotateImage().
And then maybe use this function to save the correct EXIF orientation data. For example: $image->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
备份地址：http://www.lvesu.com/blog/php/imagick.setimageorientation.php