PDF
PHP Manual

PDF_begin_layer

(PECL pdflib:2.0-2.1.3)

PDF_begin_layer — Start layer

说明

bool PDF_begin_layer ( resource $pdfdoc , int $layer )

Starts a layer for subsequent output on the page. 如果成功则返回 TRUE,失败则返回 FALSE

This function requires PDF 1.5.


PDF
PHP Manual