ImageRotate() Rotating Image by GD

<?Php
header ("Content-type: image/jpg");

$file_name='../images/top2.jpg'; // Image collected
$angle='180';    // Angle of rotation is set
$img_source = imagecreatefromjpeg($file_name); // Image created

$img_rotated = imagerotate($img_source, $angle, 0); // Rotate the image

imagejpeg($img_rotated); // Output Displayed

imagedestroy($img_source);  // Free the memory 
imagedestroy($img_rotated); // Free the memory
?>

<img src=gd-imagerotate-demo.php>

imagerotate($source_image,$angle,$bg_color,$int_transparent)

Using background colour

header ("Content-type: image/jpg");
$file_name='../images/top2.jpg';
$angle='45'; // Angle of rotation in degree
$img_source = imagecreatefromjpeg($file_name);
$bg_color = ImageColorAllocate ($img_source, 4, 20, 204);
// Rotate
$img_rotated = ImageRotate($img_source, $angle, $bg_color, 0);
// Output Display 
imagejpeg($img_rotated);
// Free the memory
imagedestroy($img_source);
imagedestroy($img_rotated);

<img src=gd-imagerotate-demo2.php>