PDF 函数
PHP Manual

PDF_set_layer_dependency

(PECL pdflib >= 2.0.0)

PDF_set_layer_dependencyDefine relationships among layers

说明

bool PDF_set_layer_dependency ( resource $pdfdoc , string $type , string $optlist )

Defines hierarchical and group relationships among layers. 成功时返回 TRUE, 或者在失败时返回 FALSE

This function requires PDF 1.5.


PDF 函数
PHP Manual