将ImageMagick命令转换为等效的PHP

Question

I wish to use the following ImageMagick SSH command in PHP:

convert image_name.jpg -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace RGB image_name.jpg

So the php ImageMagick version using:

$image = new Imagick('test.jpg');
$image->Functionhere()

Answer 1

您可以通过用反引号将bash命令包装起来来调用它，也可以使用php的exec

`convert image_name.jpg -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace RGB image_name.jpg`

Answer 2

I suppose the first thing is to check if you have access to imagick:

$version = Imagick::getVersion(); 
echo 'API version number: '.$version['versionNumber'].'<br />'; 
echo 'API version string: '.$version['versionString'].'<br />'; 

I do not like Imagick as there is not the support for it. It does not support all the options of Imagemagick. It is a class and I have never had the need to learn how to use a class and so it is more complicated than exec( ).

One thing a lot of people say is Imagick is more secure than Imagemagick; but as long as you take precautions with user data I would have thought exec( ) was nearly as secure.

exec( "convert image_name.jpg -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace RGB image_name.jpg" );

Answer 3

The correct answer was:

$im = new Imagick( $old_file );
$im->setImageCompression( Imagick::COMPRESSION_JPEG );
$im->stripImage();
$im->setSamplingFactors(array('2x2', '1x1', '1x1'));
$im->setCompressionQuality('85');