WP_Image_Editor::generate_filename( string $suffix = null, string $dest_path = null, string $extension = null ): string

Source

public function generate_filename( $suffix = null, $dest_path = null, $extension = null ) {
	// $suffix will be appended to the destination filename, just before the extension.
	if ( ! $suffix ) {
		$suffix = $this->get_suffix();
	}

	$dir = pathinfo( $this->file, PATHINFO_DIRNAME );
	$ext = pathinfo( $this->file, PATHINFO_EXTENSION );

	$name    = wp_basename( $this->file, ".$ext" );
	$new_ext = strtolower( $extension ? $extension : $ext );

	if ( ! is_null( $dest_path ) ) {
		if ( ! wp_is_stream( $dest_path ) ) {
			$_dest_path = realpath( $dest_path );
			if ( $_dest_path ) {
				$dir = $_dest_path;
			}
		} else {
			$dir = $dest_path;
		}
	}

	return trailingslashit( $dir ) . "{$name}-{$suffix}.{$new_ext}";
}

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