image_downsize() │ WP 2.5.0

array(
	[0] => url     // УРЛ картинки
	[1] => width   // ширина картинки
	[2] => height  // высота картинки
	[3] => true    // true, если получен УРЛ уменьшенной копии картинки, а не оригинала
)

image_downsize( $id, $size );

function wp_get_attachment_medium_url( $id ){
	$medium_array = image_downsize( $id, 'medium' );
	$medium_path = $medium_array[0];

	return $medium_path;
}

$img = image_downsize( 55, 'full' );
/*
Array
(
	[0] => http://wp-kama.ru/wp-content/uploads/2014/02/wix.png
	[1] => 500
	[2] => 258
	[3] =>
)
*/

$img = image_downsize( 55, 'thumbnail' );
/*
Array
(
	[0] => http://wp-kama.ru/wp-content/uploads/2014/02/wix-80x80.png
	[1] => 80
	[2] => 80
	[3] => 1
)
*/

$img = image_downsize( 55 );
/*
Array
(
	[0] => http://wp-kama.ru/wp-content/uploads/2014/02/wix-300x258.png
	[1] => 300
	[2] => 258
	[3] => 1
)
*/

$img = image_downsize( 55, array(100, 90) );
/*
Array
(
	[0] => http://wp-kama.ru/wp-content/uploads/2014/02/wix.png
	[1] => 100
	[2] => 51
	[3] =>
)
*/

$img = image_downsize( 55, array(100, 80) );
/*
Array
(
	[0] => http://wp-kama.ru/wp-content/uploads/2014/02/wix-80x80.png
	[1] => 80
	[2] => 80
	[3] => 1
)
*/

Список изменений

Код image_downsize() image downsize ^{WP 6.0.2}

function image_downsize( $id, $size = 'medium' ) {
	$is_image = wp_attachment_is_image( $id );

	/**
	 * Filters whether to preempt the output of image_downsize().
	 *
	 * Returning a truthy value from the filter will effectively short-circuit
	 * down-sizing the image, returning that value instead.
	 *
	 * @since 2.5.0
	 *
	 * @param bool|array   $downsize Whether to short-circuit the image downsize.
	 * @param int          $id       Attachment ID for image.
	 * @param string|int[] $size     Requested image size. Can be any registered image size name, or
	 *                               an array of width and height values in pixels (in that order).
	 */
	$out = apply_filters( 'image_downsize', false, $id, $size );

	if ( $out ) {
		return $out;
	}

	$img_url          = wp_get_attachment_url( $id );
	$meta             = wp_get_attachment_metadata( $id );
	$width            = 0;
	$height           = 0;
	$is_intermediate  = false;
	$img_url_basename = wp_basename( $img_url );

	// If the file isn't an image, attempt to replace its URL with a rendered image from its meta.
	// Otherwise, a non-image type could be returned.
	if ( ! $is_image ) {
		if ( ! empty( $meta['sizes']['full'] ) ) {
			$img_url          = str_replace( $img_url_basename, $meta['sizes']['full']['file'], $img_url );
			$img_url_basename = $meta['sizes']['full']['file'];
			$width            = $meta['sizes']['full']['width'];
			$height           = $meta['sizes']['full']['height'];
		} else {
			return false;
		}
	}

	// Try for a new style intermediate size.
	$intermediate = image_get_intermediate_size( $id, $size );

	if ( $intermediate ) {
		$img_url         = str_replace( $img_url_basename, $intermediate['file'], $img_url );
		$width           = $intermediate['width'];
		$height          = $intermediate['height'];
		$is_intermediate = true;
	} elseif ( 'thumbnail' === $size ) {
		// Fall back to the old thumbnail.
		$thumb_file = wp_get_attachment_thumb_file( $id );
		$info       = null;

		if ( $thumb_file ) {
			$info = wp_getimagesize( $thumb_file );
		}

		if ( $thumb_file && $info ) {
			$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;
}

Cвязанные функции

thumbnail (image картинки-миниатюры)

Картинки