How to save an image created from imagecreatefromstring() function?

Question

Here is my code:

$data = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl'
       . 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr'
       . 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r'
       . '8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
$data = base64_decode($data);

$im = imagecreatefromstring($data);
if ($im !== false) {
    header('Content-Type: image/png');
    imagepng($im);
    imagedestroy($im);

}
else {
    echo 'An error occurred.';
}

I'd like to save the image generated this way to a directory. How do I do this?

Answer 1

This is the correct syntax for imagepng:

imagepng($im, "/path/where/you/want/save/the/png.png");

According to the PHP manual:

bool imagepng ( resource $image [, string $filename [, int $quality [, int $filters ]]] )

filename - The path to save the file to.

If not set or NULL, the raw image stream will be outputted directly.