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wp_get_attachment_image_attributes filter-hook . WP 2.8.0

Filters the list of attachment image attributes.


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

	return $attr;
Array of attribute values for the image markup, keyed by attribute name. See wp_get_attachment_image().
Image attachment post.
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-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' );