php rotate image

After some INet searches and personal try-and-failures I succeed to rotate PNG images with preserving alpha channel transparency (semi transparency).

&lt;?php
&nbsp; &nbsp; $filename = 'YourFile.png';
&nbsp; &nbsp; $rotang = 20; // Rotation angle
&nbsp; &nbsp; $source = imagecreatefrompng($filename) or die('Error opening file '.$filename);
&nbsp; &nbsp; imagealphablending($source, false);
&nbsp; &nbsp; imagesavealpha($source, true);

&nbsp; &nbsp; $rotation = imagerotate($source, $rotang, imageColorAllocateAlpha($source, 0, 0, 0, 127));
&nbsp; &nbsp; imagealphablending($rotation, false);
&nbsp; &nbsp; imagesavealpha($rotation, true);

&nbsp; &nbsp; header('Content-type: image/png');
&nbsp; &nbsp; imagepng($rotation);
&nbsp; &nbsp; imagedestroy($source);
&nbsp; &nbsp; imagedestroy($rotation);
?&gt;

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php rotate image

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