$image = imagecreatetruecolor(225,225);

imagestring($image, 10, 20, 16, 'Roseindia', 0x00ff00);

$gaussian = array(array(1.0, 2.0, 1.0), array(2.0, 4.0, 2.0), array(1.0, 2.0, 1.0));

imageconvolution($image, $gaussian, 16, 0);

imagestring($image, 10, 20, 36, 'Roseindia', 0x00ff00);

header('Content-Type: image/png');

imagepng($image, null, 9);

After running the program you will get the following output

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