Crop image wordpress

rh_get_crop_image.php

<?php function rh_image_size($attachment_id, $width = null, $height = null, $crop = true, $force_crop = false) {
    $path = get_attached_file($attachment_id);
    if (!file_exists($path)) {
        return false;
    }

    $upload    = wp_upload_dir();
    $path_info = pathinfo($path);
    $base_url  = $upload['baseurl'] . str_replace($upload['basedir'], '', $path_info['dirname']);

    $meta = wp_get_attachment_metadata($attachment_id);
    $key  = sprintf('resized-%dx%d', $width, $height);

    // If the size already exists and force_crop is true, remove it before creating a new one
    if ($force_crop && isset($meta['sizes'][$key])) {
        $old_file = $upload['basedir'] . str_replace($upload['baseurl'], '', "{$base_url}/{$meta[ 'sizes' ][ $key ]['file']}");
        if (file_exists($old_file)) {
            unlink($old_file);
        }
        unset($meta['sizes'][$key]);
    }

    // If the size already exists and force_crop is false, return the existing size
    if (!$force_crop && isset($meta['sizes'][$key])) {
        return "{$base_url}/{$meta[ 'sizes' ][ $key ]['file']}";
    }

    // Generate new size
    $resized = image_make_intermediate_size($path, $width, $height, $crop);
    if ($resized && !is_wp_error($resized)) {
        // Let metadata know about our new size.
        $meta['sizes'][$key] = $resized;
        wp_update_attachment_metadata($attachment_id, $meta);

        return "{$base_url}/{$resized['file']}";
    }

    // Return original if fails
    return "{$base_url}/{$path_info['basename']}";
}