wp_attachment_is( string $type, int|WP_Post $post = null ): bool

Source

function wp_attachment_is( $type, $post = null ) {	$post = get_post( $post );	if ( ! $post ) {	return false;	}	$file = get_attached_file( $post->ID );	if ( ! $file ) {	return false;	}	if ( str_starts_with( $post->post_mime_type, $type . '/' ) ) {	return true;	}	$check = wp_check_filetype( $file );	if ( empty( $check['ext'] ) ) {	return false;	}	$ext = $check['ext'];	if ( 'import' !== $post->post_mime_type ) {	return $type === $ext;	}	switch ( $type ) {	case 'image':	$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif', 'heic' );	return in_array( $ext, $image_exts, true );	case 'audio':	return in_array( $ext, wp_get_audio_extensions(), true );	case 'video':	return in_array( $ext, wp_get_video_extensions(), true );	default:	return $type === $ext;	} } 

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