FDF 函数
PHP Manual

fdf_get_version

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

fdf_get_version — Gets version number for FDF API or file

说明

string fdf_get_version ([ resource $fdf_document ] )

Return the FDF version for the given document, or the toolkit API version number if no parameter is given.

参数

fdf_document

The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().

返回值

Returns the version as a string. For the current FDF toolkit 5.0 the API version number is 5.0 and the document version number is either 1.2, 1.3 or 1.4.

参见

FDF 函数
PHP Manual