php - how to crop image in codeigniter?

Question

i'm using codeigniter to build a project and right now i need to create a thumb depending on user choice. like he will give me X1,Y1,X2,Y2,X3,Y3,X4,Y4 i want to crop the image depending on that 4 points. i checked the image manipulation class. the crop function seems to be very strange. any help please ?

Answer 1

You will need to set the x-axis (left), width (right), y-axis (top), and height (bottom). You need to be sure to set the width and height of the image.

        list($width, $height, $type, $attr) = getimagesize($img);

        $CI->load->library('image_lib');

        $config['image_library'] = 'gd2';
        $config['source_image'] = $img;
        $config['x_axis'] = '10';
        $config['y_axis'] = '10';
        $config['maintain_ratio'] = FALSE;
        $config['width'] = $width-10;
        $config['height'] = $height-10;

The code above will crop the image by 10 pixels on the left, right, top, and bottom. you can feel free to change the value of '10' to whichever value you prefer ;)