php man page for pdf_attach_file

PDF_ATTACH_FILE(3)							 1							PDF_ATTACH_FILE(3)

PDF_attach_file - Add file attachment for current page [deprecated]

SYNOPSIS
       bool  PDF_attach_file  (resource   $pdfdoc,  float   $llx,  float  $lly, float  $urx, float  $ury, string  $filename, string  $description,
       string  $author, string	$mimetype, string  $icon)

DESCRIPTION
	Adds a file attachment annotation. Returns TRUE on success or FALSE on failure.

	This function is deprecated since PDFlib version 6, use PDF_create_annotation(3) with $type=FileAttachment instead.

PHP Documentation Group 													PDF_ATTACH_FILE(3)