wp_generate_attachment_metadata │ filter-hook │ WP 2.1.0

Filters the generated attachment meta data.

Usage

add_filter( 'wp_generate_attachment_metadata', 'wp_kama_generate_attachment_metadata_filter', 10, 3 );

/**
 * Function for `wp_generate_attachment_metadata` filter-hook.
 * 
 * @param array  $metadata      An array of attachment meta data.
 * @param int    $attachment_id Current attachment ID.
 * @param string $context       Additional context. Can be 'create' when metadata was initially created for new attachment or 'update' when the metadata was updated.
 *
 * @return array
 */
function wp_kama_generate_attachment_metadata_filter( $metadata, $attachment_id, $context ){

	// filter...
	return $metadata;
}

$metadata(array)

An array of attachment meta data.

$attachment_id(int)

Current attachment ID.

$context(string)

Additional context. Can be 'create' when metadata was initially created for new attachment or 'update' when the metadata was updated.

Changelog

Where the hook is called

return apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id, 'create' );

$metadata = apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id, 'update' );

$image_meta = apply_filters( 'wp_generate_attachment_metadata', $image_meta, $attachment_id, 'update' );

Where the hook is used in WordPress