(PHP 4 >= 4.0.7, PHP 5, PHP 7) Sets FDF character encoding

(PECL haru >= 0.0.1) Set encryption mode for the document

(PECL pdflib >= 2.0.0) Define shading pattern

(PHP 5 <= 5.3.0, PECL ming SVN) Sets the X-skew

(PECL haru >= 0.0.1) Insert new page just before the specified page

(PECL haru >= 0.0.1) Get the distance from the baseline of uppercase letters

(PECL pdflib >= 2.0.0) Start layer bool PDF_begin_layer

(PHP 4, PECL pdflib >= 1.0.0) Save graphics state

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Sets FDF-specific output headers

(PHP 4, PECL pdflib >= 1.0.0) Draw a line