PHP image_get_intermediate_size函数代码示例

function image_downsize($id, $size = 'medium')
{
    if (!wp_attachment_is_image($id)) {
        return false;
    }
    $img_url = wp_get_attachment_url($id);
    $meta = wp_get_attachment_metadata($id);
    $width = $height = 0;
    // plugins can use this to provide resize services
    if ($out = apply_filters('image_downsize', false, $id, $size)) {
        return $out;
    }
    // try for a new style intermediate size
    if ($intermediate = image_get_intermediate_size($id, $size)) {
        $img_url = str_replace(basename($img_url), $intermediate['file'], $img_url);
        $width = $intermediate['width'];
        $height = $intermediate['height'];
    } elseif ($size == 'thumbnail') {
        // fall back to the old thumbnail
        if (($thumb_file = wp_get_attachment_thumb_file($id)) && ($info = getimagesize($thumb_file))) {
            $img_url = str_replace(basename($img_url), basename($thumb_file), $img_url);
            $width = $info[0];
            $height = $info[1];
        }
    }
    if (!$width && !$height && isset($meta['width'], $meta['height'])) {
        // any other type: use the real image and constrain it
        list($width, $height) = image_constrain_size_for_editor($meta['width'], $meta['height'], $size);
    }
    if ($img_url) {
        return array($img_url, $width, $height);
    }
    return false;
}

 function downsize($out, $id, $size)
 {
     $img_url = wp_get_attachment_url($id);
     $img_path = get_attached_file($id);
     $meta = wp_get_attachment_metadata($id);
     $width = $height = 0;
     $is_intermediate = false;
     $img_url_basename = wp_basename($img_url);
     $img_path_basename = wp_basename($img_path);
     // extract filter from size request
     if (!is_string($size)) {
         return $out;
     }
     $size_bits = explode(':', $size);
     $filter = isset($size_bits[1]) ? $size_bits[1] : false;
     $size = isset($size_bits[0]) ? $size_bits[0] : false;
     // start the reactor
     if ($filter) {
         // try for a new style intermediate size
         if ($intermediate = image_get_intermediate_size($id, $size)) {
             $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url);
             $img_path = str_replace($img_path_basename, $intermediate['file'], $img_path);
             $width = $intermediate['width'];
             $height = $intermediate['height'];
             $is_intermediate = true;
         } elseif ($size == 'thumbnail') {
             // fall back to the old thumbnail
             if (($thumb_file = wp_get_attachment_thumb_file($id)) && ($info = getimagesize($thumb_file))) {
                 $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url);
                 $img_path = str_replace($img_path_basename, wp_basename($thumb_file), $img_path);
                 $width = $info[0];
                 $height = $info[1];
                 $is_intermediate = true;
             }
         }
         if (!$width && !$height && isset($meta['width'], $meta['height'])) {
             // any other type: use the real image
             $width = $meta['width'];
             $height = $meta['height'];
         }
         if ($img_url && $img_path) {
             $input = $img_path;
             $output = $this->filtered_url($input, $filter);
             // generate filtered thumb
             if (!file_exists($output)) {
                 $this->filter($filter, $input, $output);
             }
             // point to our new file
             $img_url = $this->filtered_url($img_url, $filter);
             // we have the actual image size, but might need to further constrain it if content_width is narrower
             list($width, $height) = image_constrain_size_for_editor($width, $height, $size);
             return array($img_url, $width, $height, $is_intermediate);
         }
         // don't continue the downsize funtion
         return true;
     }
     return $out;
 }

 public function image_downsize($out, $id, $size)
 {
     // we don't handle this
     if (is_array($size)) {
         return false;
     }
     $meta = wp_get_attachment_metadata($id);
     $wanted_width = $wanted_height = 0;
     if (empty($meta['file'])) {
         return false;
     }
     // get $size dimensions
     global $_wp_additional_image_sizes;
     if (isset($_wp_additional_image_sizes) && isset($_wp_additional_image_sizes[$size])) {
         $wanted_width = $_wp_additional_image_sizes[$size]['width'];
         $wanted_height = $_wp_additional_image_sizes[$size]['height'];
         $wanted_crop = isset($_wp_additional_image_sizes[$size]['crop']) ? $_wp_additional_image_sizes[$size]['crop'] : false;
     } else {
         if (in_array($size, array('thumbnail', 'medium', 'large'))) {
             $wanted_width = get_option($size . '_size_w');
             $wanted_height = get_option($size . '_size_h');
             $wanted_crop = 'thumbnail' === $size ? (bool) get_option('thumbnail_crop') : false;
         } else {
             // unknown size, bail out
             return false;
         }
     }
     if (0 === absint($wanted_width) && 0 === absint($wanted_height)) {
         return false;
     }
     if ($intermediate = image_get_intermediate_size($id, $size)) {
         return false;
     } else {
         // image size not found, create it
         $attachment_path = get_attached_file($id);
         $image_editor = wp_get_image_editor($attachment_path);
         if (!is_wp_error($image_editor)) {
             $image_editor->resize($wanted_width, $wanted_height, $wanted_crop);
             $result_image_size = $image_editor->get_size();
             $result_width = $result_image_size['width'];
             $result_height = $result_image_size['height'];
             $suffix = $result_width . 'x' . $result_height;
             $filename = $image_editor->generate_filename($suffix);
             $image_editor->save($filename);
             $meta['sizes'][$size] = array('file' => basename($filename), 'width' => $result_width, 'height' => $result_height, 'mime-type' => get_post_mime_type($id));
             wp_update_attachment_metadata($id, $meta);
         } else {
             return false;
         }
     }
     return false;
 }

 function swift_delete_attachment($post_id)
 {
     if (!$this->swift_plugin_setup()) {
         return;
     }
     $backup_sizes = get_post_meta($post_id, '_wp_attachment_backup_sizes', true);
     $intermediate_sizes = array();
     foreach (get_intermediate_image_sizes() as $size) {
         if ($intermediate = image_get_intermediate_size($post_id, $size)) {
             $intermediate_sizes[] = $intermediate;
         }
     }
     if (!($swiftObject = $this->swift_get_attachment_info($post_id))) {
         return;
     }
     $swift_path = dirname($swiftObject['key']);
     $objects = array();
     // remove intermediate and backup images if there are any
     foreach ($intermediate_sizes as $intermediate) {
         $objects[] = array('Key' => path_join($swift_path, $intermediate['file']));
     }
     if (is_array($backup_sizes)) {
         foreach ($backup_sizes as $size) {
             $objects[] = array('Key' => $swift_path);
         }
     }
     // Try removing any @2x images but ignore any errors
     if ($objects) {
         $hidpi_images = array();
         foreach ($objects as $object) {
             $hidpi_images[] = array('Key' => $this->swift_get_hidpi_file_path($object['Key']));
         }
         try {
             foreach ($hidpi_images as $image) {
                 $this->swift_get_client()->getContainer($swiftObject['bucket'])->getObject($image['Key'])->delete();
             }
         } catch (Exception $e) {
         }
     }
     $objects[] = array('Key' => $swiftObject['key']);
     try {
         foreach ($objects as $object) {
             $this->swift_get_client()->getContainer($swiftObject['bucket'])->getObject($object['Key'])->delete();
         }
     } catch (Exception $e) {
         error_log('Error removing files from Swift: ' . $e->getMessage());
         return;
     }
     delete_post_meta($post_id, 'swift_info');
 }

 function add_post_featured_image_as_rss_item_enclosure()
 {
     if (!has_post_thumbnail()) {
         return;
     }
     $thumbnail_size = apply_filters('rss_enclosure_image_size', 'thumbnail');
     $thumbnail_id = get_post_thumbnail_id(get_the_ID());
     $thumbnail = image_get_intermediate_size($thumbnail_id, $thumbnail_size);
     if (empty($thumbnail)) {
         return;
     }
     $upload_dir = wp_upload_dir();
     printf('<enclosure url="%s" length="%s" type="%s" />', $thumbnail['url'], filesize(path_join($upload_dir['basedir'], $thumbnail['path'])), get_post_mime_type($thumbnail_id));
 }

 public function filePath($size = null)
 {
     if ($this->isImage() and !is_null($size)) {
         if ($size === 'thumb') {
             $size = 'thumbnail';
         }
         $base = wp_upload_dir();
         $data = image_get_intermediate_size($this->id(), $size);
         $path = isset($data['path']) ? $base['basedir'] . '/' . $data['path'] : null;
     } else {
         $path = get_attached_file($this->id(), true);
     }
     return $path;
 }

 function delete_attachment($post_id)
 {
     if (!$this->is_plugin_setup()) {
         return;
     }
     $backup_sizes = get_post_meta($post_id, '_wp_attachment_backup_sizes', true);
     $intermediate_sizes = array();
     foreach (get_intermediate_image_sizes() as $size) {
         if ($intermediate = image_get_intermediate_size($post_id, $size)) {
             $intermediate_sizes[] = $intermediate;
         }
     }
     if (!($dsobject = $this->get_attachment_dreamspeed_info($post_id))) {
         return;
     }
     $amazon_path = dirname($dsobject['key']);
     $objects = array();
     // remove intermediate and backup images if there are any
     foreach ($intermediate_sizes as $intermediate) {
         $objects[] = array('Key' => path_join($amazon_path, $intermediate['file']));
     }
     if (is_array($backup_sizes)) {
         foreach ($backup_sizes as $size) {
             $objects[] = array('Key' => path_join($amazon_path, $del_file));
         }
     }
     // Try removing any @2x images but ignore any errors
     if ($objects) {
         $hidpi_images = array();
         foreach ($objects as $object) {
             $hidpi_images[] = array('Key' => $this->get_hidpi_file_path($object['Key']));
         }
         try {
             $this->get_doclient()->deleteObjects(array('Bucket' => $dsobject['bucket'], 'Objects' => $hidpi_images));
         } catch (Exception $e) {
         }
     }
     $objects[] = array('Key' => $dsobject['key']);
     try {
         $this->get_doclient()->deleteObjects(array('Bucket' => $dsobject['bucket'], 'Objects' => $objects));
     } catch (Exception $e) {
         error_log('Error removing files from DreamSpeed: ' . $e->getMessage());
         return;
     }
     delete_post_meta($post_id, 'amazonS3_info');
 }

 function wpsc_product_image($attachment_id = 0, $width = null, $height = null)
 {
     $uploads = wp_upload_dir();
     // Do some dancing around the image size
     if ($width >= 10 && $height >= 10 && ($width <= 1024 && $height <= 1024)) {
         $intermediate_size = "wpsc-{$width}x{$height}";
     }
     // Get image url if we have enough info
     if ($attachment_id > 0 && !empty($intermediate_size)) {
         // Get all the required information about the attachment
         $image_meta = get_post_meta($attachment_id, '');
         $file_path = get_attached_file($attachment_id);
         // Clean up the meta array
         foreach ($image_meta as $meta_name => $meta_value) {
             $image_meta[$meta_name] = maybe_unserialize(array_pop($meta_value));
         }
         $attachment_metadata = $image_meta['_wp_attachment_metadata'];
         // Determine if we already have an image of this size
         if (isset($attachment_metadata['sizes']) && count($attachment_metadata['sizes']) > 0 && isset($attachment_metadata['sizes'][$intermediate_size])) {
             $intermediate_image_data = image_get_intermediate_size($attachment_id, $intermediate_size);
             $image_url = $intermediate_image_data['url'];
         } else {
             $image_url = home_url("index.php?wpsc_action=scale_image&attachment_id={$attachment_id}&width={$width}&height={$height}");
         }
         // Not enough info so attempt to fallback
     } else {
         if (!empty($attachment_id)) {
             $image_url = home_url("index.php?wpsc_action=scale_image&attachment_id={$attachment_id}&width={$width}&height={$height}");
         } else {
             $image_url = false;
         }
     }
     if (empty($image_url) && !empty($file_path)) {
         $image_meta = get_post_meta($attachment_id, '_wp_attached_file');
         if (!empty($image_meta)) {
             $image_url = $uploads['baseurl'] . '/' . $image_meta[0];
         }
     }
     if (is_ssl()) {
         str_replace('http://', 'https://', $image_url);
     }
     return apply_filters('wpsc_product_image', $image_url);
 }

/**
 * Uses WordPress filter for image_downsize, kill wp-image-dimension
 * code by Andrew Rickmann
 * http://www.wp-fun.co.uk/
 * @param $value, $id, $size
 */
function __wp_supercustom_cms_image_downsize($value = FALSE, $id = 0, $size = 'medium')
{
    if (!wp_attachment_is_image($id)) {
        return FALSE;
    }
    $img_url = wp_get_attachment_url($id);
    // Mimic functionality in image_downsize function in wp-includes/media.php
    if ($intermediate = image_get_intermediate_size($id, $size)) {
        $img_url = str_replace(basename($img_url), $intermediate['file'], $img_url);
    } elseif ($size == 'thumbnail') {
        // fall back to the old thumbnail
        if ($thumb_file = wp_get_attachment_thumb_file() && ($info = getimagesize($thumb_file))) {
            $img_url = str_replace(basename($img_url), basename($thumb_file), $img_url);
        }
    }
    if ($img_url) {
        return array($img_url, 0, 0);
    }
    return FALSE;
}

/**
 * Get Image Source.
 *
 * Return a uri to a custom image size.
 *
 * If size doesn't exist, attempt to create a resized version.
 * The output of this function should be escaped before printing to the browser.
 *
 * @param     int       Image ID.
 * @return    string    URI of custom image on success; emtpy string otherwise.
 *
 * @access    private.
 * @since     2010-10-28
 */
function taxonomy_image_plugin_get_image_src($id)
{
    $detail = taxonomy_image_plugin_detail_image_size();
    /* Return url to custom intermediate size if it exists. */
    $img = image_get_intermediate_size($id, $detail['name']);
    if (isset($img['url'])) {
        return $img['url'];
    }
    /* Detail image does not exist, attempt to create it. */
    $wp_upload_dir = wp_upload_dir();
    if (isset($wp_upload_dir['basedir'])) {
        /* Create path to original uploaded image. */
        $path = trailingslashit($wp_upload_dir['basedir']) . get_post_meta($id, '_wp_attached_file', true);
        if (is_file($path)) {
            /* Attempt to create a new downsized version of the original image. */
            $new = image_resize($path, $detail['size'][0], $detail['size'][1], $detail['size'][2]);
            /* Image creation successful. Generate and cache image metadata. Return url. */
            if (!is_wp_error($new)) {
                $meta = wp_generate_attachment_metadata($id, $path);
                wp_update_attachment_metadata($id, $meta);
                $img = image_get_intermediate_size($id, $detail['name']);
                if (isset($img['url'])) {
                    return $img['url'];
                }
            }
        }
    }
    /* Custom intermediate size cannot be created, try for thumbnail. */
    $img = image_get_intermediate_size($id, 'thumbnail');
    if (isset($img['url'])) {
        return $img['url'];
    }
    /* Thumbnail cannot be found, try fullsize. */
    $url = wp_get_attachment_url($id);
    if (!empty($url)) {
        return $url;
    }
    /**
     * No image can be found.
     * This is most likely caused by a user deleting an attachment before deleting it's association with a taxonomy.
     * If we are in the administration panels:
     * - Delete the association.
     * - Return uri to default.png.
     */
    if (is_admin()) {
        $assoc = taxonomy_image_plugin_get_associations();
        foreach ($assoc as $term => $img) {
            if ($img === $id) {
                unset($assoc[$term]);
            }
        }
        update_option('taxonomy_image_plugin', $assoc);
        return taxonomy_image_plugin_url('default.png');
    }
    /*
     * No image can be found.
     * Return path to blank-image.png.
     */
    return taxonomy_image_plugin_url('blank.png');
}

/**
 * Queried Term Image Data.
 *
 * Returns a url to the image associated with the current queried
 * term. In the event that no image is found an empty string will
 * be returned.
 *
 * Designed to be used in archive templates including
 * (but not limited to) archive.php, category.php, tag.php,
 * taxonomy.php as well as derivatives of these templates.
 *
 * Recognized Arguments
 *
 * image_size (string) - May be any image size registered with
 * WordPress. If no image size is specified, 'thumbnail' will be
 * used as a default value. In the event that an unregistered size
 * is specified, this function will return an empty array.
 *
 * @param     mixed          Default value for apply_filters() to return. Unused.
 * @param     array          Named Arguments.
 * @return    array          Image data: url, width and height.
 *
 * @access    private        Use the 'taxonomy-images-queried-term-image-data' filter.
 * @since     0.7
 * @alter     0.7.2
 */
function taxonomy_images_plugin_get_queried_term_image_data( $default, $args = array() ) {
	$filter = 'taxonomy-images-queried-term-image-data';
	if ( current_filter() !== $filter ) {
		taxonomy_image_plugin_please_use_filter( __FUNCTION__, $filter );
	}

	$args = wp_parse_args( $args, array(
		'image_size' => 'thumbnail',
	) );

	$ID = apply_filters( 'taxonomy-images-queried-term-image-id', 0 );

	if ( empty( $ID ) ) {
		return array();
	}

	$data = array();

	if ( in_array( $args['image_size'], array( 'full', 'fullsize' ) ) ) {
		$src = wp_get_attachment_image_src( $ID, 'full' );

		if ( isset( $src[0] ) ) {
			$data['url'] = $src[0];
		}
		if ( isset( $src[1] ) ) {
			$data['width'] = $src[1];
		}
		if ( isset( $src[2] ) ) {
			$data['height'] = $src[2];
		}
	} else {
		$data = image_get_intermediate_size( $ID, $args['image_size'] );
	}

	if ( ! empty( $data ) ) {
		return $data;
	}

	return array();
}

/**
 * Scale an image to fit a particular size (such as 'thumb' or 'medium').
 *
 * Array with image url, width, height, and whether is intermediate size, in
 * that order is returned on success is returned. $is_intermediate is true if
 * $url is a resized image, false if it is the original.
 *
 * The URL might be the original image, or it might be a resized version. This
 * function won't create a new resized copy, it will just return an already
 * resized one if it exists.
 *
 * A plugin may use the 'image_downsize' filter to hook into and offer image
 * resizing services for images. The hook must return an array with the same
 * elements that are returned in the function. The first element being the URL
 * to the new image that was resized.
 *
 * @since 2.5.0
 *
 * @param int          $id   Attachment ID for image.
 * @param array|string $size Optional. Image size to scale to. Accepts any valid image size,
 *                           or an array of width and height values in pixels (in that order).
 *                           Default 'medium'.
 * @return false|array Array containing the image URL, width, height, and boolean for whether
 *                     the image is an intermediate size. False on failure.
 */
function image_downsize($id, $size = 'medium')
{
    if (!wp_attachment_is_image($id)) {
        return false;
    }
    /**
     * Filter whether to preempt the output of image_downsize().
     *
     * Passing a truthy value to the filter will effectively short-circuit
     * down-sizing the image, returning that value as output instead.
     *
     * @since 2.5.0
     *
     * @param bool         $downsize Whether to short-circuit the image downsize. Default false.
     * @param int          $id       Attachment ID for image.
     * @param array|string $size     Size of image. Image size or array of width and height values (in that order).
     *                               Default 'medium'.
     */
    if ($out = apply_filters('image_downsize', false, $id, $size)) {
        return $out;
    }
    $img_url = wp_get_attachment_url($id);
    $meta = wp_get_attachment_metadata($id);
    $width = $height = 0;
    $is_intermediate = false;
    $img_url_basename = wp_basename($img_url);
    // try for a new style intermediate size
    if ($intermediate = image_get_intermediate_size($id, $size)) {
        $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url);
        $width = $intermediate['width'];
        $height = $intermediate['height'];
        $is_intermediate = true;
    } elseif ($size == 'thumbnail') {
        // fall back to the old thumbnail
        if (($thumb_file = wp_get_attachment_thumb_file($id)) && ($info = getimagesize($thumb_file))) {
            $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url);
            $width = $info[0];
            $height = $info[1];
            $is_intermediate = true;
        }
    }
    if (!$width && !$height && isset($meta['width'], $meta['height'])) {
        // any other type: use the real image
        $width = $meta['width'];
        $height = $meta['height'];
    }
    if ($img_url) {
        // we have the actual image size, but might need to further constrain it if content_width is narrower
        list($width, $height) = image_constrain_size_for_editor($width, $height, $size);
        return array($img_url, $width, $height, $is_intermediate);
    }
    return false;
}

/**
 * Retrieves a source size attribute for an image from an array of values.
 *
 * @since 4.4.0
 *
 * @param int    $attachment_id Image attachment ID.
 * @param string $size          Optional. Name of image size. Default value: 'medium'.
 * @param array  $args {
 *     Optional. Arguments to retrieve attachments.
 *
 *     @type array|string $sizes An array or string containing of size information.
 *     @type int          $width A single width value used in the default `sizes` string.
 * }
 * @return string|bool A valid source size value for use in a 'sizes' attribute or false.
 */
function wp_get_attachment_image_sizes($attachment_id, $size = 'medium', $args = null)
{
    $img_width = 0;
    // Try to get the image width from $args.
    if (is_array($args) && !empty($args['width'])) {
        $img_width = (int) $args['width'];
    } elseif ($img = image_get_intermediate_size($attachment_id, $size)) {
        list($img_width) = image_constrain_size_for_editor($img['width'], $img['height'], $size);
    }
    // Bail early if $image_width isn't set.
    if (!$img_width) {
        return false;
    }
    // Set the image width in pixels.
    $img_width = $img_width . 'px';
    // Set up our default values.
    $defaults = array('sizes' => array(array('size_value' => '100vw', 'mq_value' => $img_width, 'mq_name' => 'max-width'), array('size_value' => $img_width)));
    $args = wp_parse_args($args, $defaults);
    /**
     * Filter arguments used to create 'sizes' attribute.
     *
     * @since 4.4.0
     *
     * @param array   $args          An array of arguments used to create a 'sizes' attribute.
     * @param int     $attachment_id Post ID of the original image.
     * @param string  $size          Name of the image size being used.
     */
    $args = apply_filters('wp_image_sizes_args', $args, $attachment_id, $size);
    // If sizes is passed as a string, just use the string.
    if (is_string($args['sizes'])) {
        $size_list = $args['sizes'];
        // Otherwise, breakdown the array and build a sizes string.
    } elseif (is_array($args['sizes'])) {
        $size_list = '';
        foreach ($args['sizes'] as $size) {
            // Use 100vw as the size value unless something else is specified.
            $size_value = $size['size_value'] ? $size['size_value'] : '100vw';
            // If a media length is specified, build the media query.
            if (!empty($size['mq_value'])) {
                $media_length = $size['mq_value'];
                // Use max-width as the media condition unless min-width is specified.
                $media_condition = !empty($size['mq_name']) ? $size['mq_name'] : 'max-width';
                // If a media_length was set, create the media query.
                $media_query = '(' . $media_condition . ": " . $media_length . ') ';
            } else {
                // If no media length was set, $media_query is blank.
                $media_query = '';
            }
            // Add to the source size list string.
            $size_list .= $media_query . $size_value . ', ';
        }
        // Remove the trailing comma and space from the end of the string.
        $size_list = substr($size_list, 0, -2);
    }
    // Return the sizes value as $size_list or false.
    return $size_list ? $size_list : false;
}

 function test_insert_image_delete()
 {
     if (!function_exists('imagejpeg')) {
         $this->markTestSkipped('jpeg support unavailable');
     }
     update_option('medium_size_w', 400);
     update_option('medium_size_h', 0);
     update_option('medium_large_size_w', 600);
     update_option('medium_large_size_h', 0);
     $filename = DIR_TESTDATA . '/images/2007-06-17DSC_4173.JPG';
     $contents = file_get_contents($filename);
     $upload = wp_upload_bits(basename($filename), null, $contents);
     $this->assertTrue(empty($upload['error']));
     $id = $this->_make_attachment($upload);
     $uploads = wp_upload_dir();
     // check that the file and intermediates exist
     $thumb = image_get_intermediate_size($id, 'thumbnail');
     $this->assertEquals('2007-06-17DSC_4173-150x150.jpg', $thumb['file']);
     $this->assertTrue(is_file($uploads['basedir'] . DIRECTORY_SEPARATOR . $thumb['path']));
     $medium = image_get_intermediate_size($id, 'medium');
     $this->assertEquals('2007-06-17DSC_4173-400x602.jpg', $medium['file']);
     $this->assertTrue(is_file($uploads['basedir'] . DIRECTORY_SEPARATOR . $medium['path']));
     $medium_large = image_get_intermediate_size($id, 'medium_large');
     $this->assertEquals('2007-06-17DSC_4173-600x904.jpg', $medium_large['file']);
     $this->assertTrue(is_file($uploads['basedir'] . DIRECTORY_SEPARATOR . $medium_large['path']));
     $meta = wp_get_attachment_metadata($id);
     $original = $meta['file'];
     $this->assertTrue(is_file($uploads['basedir'] . DIRECTORY_SEPARATOR . $original));
     // now delete the attachment and make sure all files are gone
     wp_delete_attachment($id);
     $this->assertFalse(is_file($thumb['path']));
     $this->assertFalse(is_file($medium['path']));
     $this->assertFalse(is_file($medium_large['path']));
     $this->assertFalse(is_file($original));
 }

/**
 * wpmlm scale image function, dynamically resizes an image oif no image already exists of that size.
 */
function wpmlm_scale_image()
{
    global $wpdb;
    if (!isset($_REQUEST['wpmlm_action']) || !isset($_REQUEST['attachment_id']) || 'scale_image' != $_REQUEST['wpmlm_action'] || !is_numeric($_REQUEST['attachment_id'])) {
        return false;
    }
    require_once ABSPATH . 'wp-admin/includes/image.php';
    $attachment_id = absint($_REQUEST['attachment_id']);
    $width = absint($_REQUEST['width']);
    $height = absint($_REQUEST['height']);
    $intermediate_size = '';
    if ($width >= 10 && $height >= 10 && ($width <= 1024 && $height <= 1024)) {
        $intermediate_size = "wpmlm-{$width}x{$height}";
        $generate_thumbnail = true;
    } else {
        if (isset($_REQUEST['intermediate_size'])) {
            $intermediate_size = esc_attr($_REQUEST['intermediate_size']);
        }
        $generate_thumbnail = false;
    }
    // If the attachment ID is greater than 0, and the width and height is greater than or equal to 10, and less than or equal to 1024
    if ($attachment_id > 0 && $intermediate_size != '') {
        // Get all the required information about the attachment
        $uploads = wp_upload_dir();
        $image_meta = get_post_meta($attachment_id, '');
        $file_path = get_attached_file($attachment_id);
        foreach ($image_meta as $meta_name => $meta_value) {
            // clean up the meta array
            $image_meta[$meta_name] = maybe_unserialize(array_pop($meta_value));
        }
        if (!isset($image_meta['_wp_attachment_metadata'])) {
            $image_meta['_wp_attachment_metadata'] = '';
        }
        $attachment_metadata = $image_meta['_wp_attachment_metadata'];
        if (!isset($attachment_metadata['sizes'])) {
            $attachment_metadata['sizes'] = '';
        }
        if (!isset($attachment_metadata['sizes'][$intermediate_size])) {
            $attachment_metadata['sizes'][$intermediate_size] = '';
        }
        // determine if we already have an image of this size
        if (count($attachment_metadata['sizes']) > 0 && $attachment_metadata['sizes'][$intermediate_size]) {
            $intermediate_image_data = image_get_intermediate_size($attachment_id, $intermediate_size);
            if (file_exists($file_path)) {
                $original_modification_time = filemtime($file_path);
                $cache_modification_time = filemtime($uploads['basedir'] . "/" . $intermediate_image_data['path']);
                if ($original_modification_time < $cache_modification_time) {
                    $generate_thumbnail = false;
                }
            }
        }
        if ($generate_thumbnail == true) {
            //JS - 7.1.2010 - Added true parameter to function to not crop - causing issues on WPShop
            $intermediate_size_data = image_make_intermediate_size($file_path, $width, $height, true);
            $attachment_metadata['sizes'][$intermediate_size] = $intermediate_size_data;
            wp_update_attachment_metadata($attachment_id, $attachment_metadata);
            $intermediate_image_data = image_get_intermediate_size($attachment_id, $intermediate_size);
        }
        /// if we are serving the page using SSL, we have to use for the image too.
        if (is_ssl()) {
            $output_url = str_replace("http://", "https://", $intermediate_image_data['url']);
        } else {
            $output_url = $intermediate_image_data['url'];
        }
        wp_redirect($output_url);
    } else {
        _e("Invalid Image parameters", 'wpmlm');
    }
    exit;
}