Function to resize an uploaded image to a maximum width/height depending on orientation

wp_resize_image.php

function resize_uploaded_image($file_path, $max_width, $max_height) {
    $image = wp_get_image_editor($file_path);
    if (!is_wp_error($image)) {
        $size = $image->get_size();
        $current_width = $size['width'];
        $current_height = $size['height'];

        // Determine the orientation of the image
        $orientation = $current_width > $current_height ? 'landscape' : 'portrait';

        // Logic for resizing based on orientation
        if ($orientation == 'landscape' && $current_width > $max_width) {
            // Resize landscape image
            $image->resize($max_width, null, false);
        } elseif ($orientation == 'portrait' && $current_height > $max_height) {
            // Resize portrait image
            $image->resize(null, $max_height, false);
        }

        // Save the image
        $image->save($file_path);
    }
}