PDF_begin_layer

(PECL pdflib >= 2.0.0)

PDF_begin_layer — Start layer

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PDF_begin_layer ( resource $pdfdoc , int $layer ) : bool

Starts a layer for subsequent output on the page. �ɹ�ʱ���� TRUE�� ������ʧ��ʱ���� FALSE��

This function requires PDF 1.5.