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filter is not described

wp_get_attachment_image_attributes filter-hook . WP 2.8.0

Filters the list of attachment image attributes.

Usage

add_filter( 'wp_get_attachment_image_attributes', 'filter_function_name_1534', 10, 3 );
function filter_function_name_1534( $attr, $attachment, $size ){
	// filter...

	return $attr;
}
$attr(string[])
Array of attribute values for the image markup, keyed by attribute name. See wp_get_attachment_image().
$attachment(WP_Post)
Image attachment post.
$size(string|int[])
Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).

Where the hook is called

wp_get_attachment_image()
wp_get_attachment_image_attributes
wp-includes/media.php 1090
$attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size );

Where in WP core the hook is used WordPress

wp-includes/media.php 2056
add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
wp-includes/media.php 2069
remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );