我的代码:
<!DOCTYPE html>
<html>
<body>
<h1>Rotating an Image</h1>
<?php
$img = imagecreatefromjpeg("myPic.jpg");
$imgRotated = imagerotate($img, 45, -1);
imagejpeg($imgRotated, "myPic.jpg", 100);
?>
<img src="myPic.jpg"/><img src="myPicRotated.jpg">
</body>
</html>
错误
Warning: imagejpeg() expects parameter 1 to be resource, bool given in C:\xampp\htdocs\MyWebsite\index.php on line 11