asked on

Force-download

Is there a way to force a download, prompt a save to download, or open in new window when a button is clicked or when a page is loaded?

ASKER CERTIFIED SOLUTION

Michael701

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walker6o9

ASKER

That works fine. However, when I try to incorporate just a simple version of that into my code, I get the following error:
Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\annualReport\index.php:72) in C:\wamp\www\annualReport\index.php on line 278

Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\annualReport\index.php:72) in C:\wamp\www\annualReport\index.php on line 279

Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\annualReport\index.php:72) in C:\wamp\www\annualReport\index.php on line 280


 
<html>
<title>Coca-Cola 2007 Annual Report PDF's
</title>
 
<head>
 
<div align="left">
<font size="28" color="#DDDDDD" style="letter-spacing:-0.1em">2007 Annual Review</font>
<br>
<br>
<font size="20" color="#DDDDDD" style="letter-spacing:-0.1em">PDF Builder</font>
 
 
<style type="text/css">
.class1 A:link {text-decoration: underline; color:#F40009;}
.class1 A:visited {text-decoration: underline; color: #F40009;}
.class1 A:active {text-decoration: underline; color: blue;}
.class1 A:hover {text-decoration: underline; color: blue;}
 
 
.class2 A:link {text-align: left; text-decoration: underline; color:#FFFFFF; font-size: 12pt; }
.class2 A:visited {text-align: left; text-decoration: underline; color: #FFFFFF; font-size: 12pt; }
.class2 A:active {text-align: left; text-decoration: underline; color: blue; font-size: 12pt; }
.class2 A:hover {text-align: left; text-decoration: underline; color: blue;font-size: 12pt; }
 
</style>
 
 
 
</head>
<body>
 
<link rel="stylesheet" type="text/css" media="all" href="/css/main.css" />
  <link rel="stylesheet" type="text/css" media="print" href="/css/print.css" />
  <!--[if lte IE 6]><link rel="stylesheet" type="text/css" media="all" href="/css/ie5-6win.css" /><![endif]-->
  <!--[if IE 6]><link rel="stylesheet" type="text/css" media="all" href="/css/ie6.css" /><![endif]-->
  <!--[if IE 7.0]><link rel="stylesheet" type="text/css" media="all" href="/css/ie7.css" /><![endif]-->
<form name="myform" action="annual_report.pdf" method="POST">
 
<div style="width:500px"><br>
				<table  border="2" bgcolor="#990000" cellpadding="4" cellspacing="1">
				  <tr bgcolor="#999999">
					<td><font color="#FFFFFF">SELECT</font></td>
					<td><font color="#FFFFFF">Click To Preview</font></td>
						
				  </tr>
				  <tr bgcolor="#FFFFFF">
					 <td align="left" valign="top" nowrap><input type="checkbox" name="option[]" value="1"><br></td>
             		 <td width="100%" valign="middle"><span class="class1"><a href="/investors/pdfs/2007_annual_review.pdf" target="_blank" title="Opens in new window" onClick="javascript: pageTracker._trackPageview('/downloads/investors_2007_ar_completePDF');">Complete 
                2007 Annual Review</a></span></td>
					
				 </tr>
				  <tr bgcolor="#FFFFFF">
					<td align="left" valign="top" nowrap><input type="checkbox" name="option[]" value="2"><br></td>
					<td width="100%" valign="middle"><span class="class1"><a href="/investors/pdfs/2007_annual_review/Coke_AR07_Financial_Data.pdf" target="_blank" title="Opens in new window" onClick="javascript: pageTracker._trackPageview('/downloads/investors_2007_ar_financial_dataPDF');">Financial Data</a></span></td>
					  </tr>
				  
				</table>
 
 
 
 
 
<br>
<input type="submit" name="option[]" value="Generate PDF">
</div>
</div>
</form>
 
 
<?php
 
 
$page1=0;
$page2=0;
$page3=0;
$page4=0;
$page5=0;
$page6=0;
$page7=0;
$page8=0;
$page9=0;
$page10=0;
$run = 0;
 
if($_POST['option']){
   $opts = $_POST['option'];
   foreach ($opts as $o) {
      if($o == 1){$page1=1;}
      if($o == 2){$page2=1;}
      if($o == 3){$page3=1;}
      if($o == 4){$page4=1;}
      if($o == 5){$page5=1;}
      if($o == 6){$page6=1;}
      if($o == 7){$page7=1;}
      if($o == 8){$page8=1;}
      if($o == 9){$page9=1;}
      if($o == 10){$page10=1;}
      if($o == "Generate PDF"){$run=1;}
   }
}
 
 
 
 
 
/* $Id: starter_pdfmerge.php,v 1.1.2.1 2007/09/27 12:58:00 rjs Exp $
 *
 * PDF merge starter:
 * Merge pages from multiple PDF documents; interactive elements (e.g. 
 * bookmarks) will be dropped.
 *
 * required software: PDFlib+PDI/PPS 7
 * required data: PDF documents
 */
 
/* This is where the data files are. Adjust as necessary. */
 
 
if($page1 !=0 or $page2 !=0 or $page3 !=0 or $page4 !=0 or $page5 !=0 or $page6 !=0 or $page7 !=0 or $page8 !=0 or $page9 !=0 or $page10 !=0)
{
 
 
 
$searchpath = "C:\wamp\www\annualReport\data";
$outfilename = "C:\wamp\www\annualReport\starter_pdfmerge.pdf";
 
$pdffiles = array(
	
);
 
if($page1 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review.pdf");
}
if($page2 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Financial_Data.pdf");
}
if($page3 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Executive_Letter.pdf");
}
if($page4 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Business_Profile.pdf");
}
if($page5 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Company_Highlights.pdf");
}
if($page6 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Year_In_Review.pdf");
}
if($page7 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Marketing_Highlights.pdf");
}
if($page8 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_Operating_Group_Highlights.pdf");
}
if($page9 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_BoardofDirectors_Management.pdf");
}
if($page10 ==1)
{
array_push($pdffiles, "/investors/pdfs/2007_annual_review/Coke_AR07_ForwardLookingStatements_ShareownerInformation.pdf");
}
 
 
 
 
 
 
 
try {
    $p = new PDFlib();
 
 
    # This means we must check return values of load_font() etc.
    $p->set_parameter("errorpolicy", "return");
 
    $p->set_parameter("SearchPath", $searchpath);
 
    if ($p->begin_document($outfilename, "") == 0)
	die("Error: " . $p->get_errmsg());
 
    $p->set_info("Creator", "PDFlib starter sample");
    $p->set_info("Title", "starter_pdfmerge");
 
    foreach ($pdffiles as $pdffile) { 
	/* Open the input PDF */
	$indoc = $p->open_pdi_document($pdffile, "");
	if ($indoc == 0) {
	    printf("Error: %s\n", $p->get_errmsg());
	    continue;
	}
 
	$endpage = $p->pcos_get_number($indoc, "/Root/Pages/Count");
 
	/* Loop over all pages of the input document */
	for ($pageno = 1; $pageno <= $endpage; $pageno++) {
	    $page = $p->open_pdi_page($indoc, $pageno, "");
 
	    if ($page == 0) {
		printf("Error: %s\n", $p->get_errmsg());
		continue;
	    }
	    /* Dummy $page size; will be adjusted later */
	    $p->begin_page_ext(10, 10, "");
 
	    /* Create a bookmark with the file name */
	    if ($pageno == 1) {
		$p->create_bookmark($pdffile, "");
	    }
 
	    /* Place the imported $page on the output $page, and
	     * adjust the $page size
	     */
	    $p->fit_pdi_page($page, 0, 0, "adjustpage");
	    $p->close_pdi_page($page);
 
	    $p->end_page_ext("");
	}
	$p->close_pdi_document($indoc);
    }
 
    $p->end_document("");
    echo"<br>";
	echo "<div style='text-align:left'>";
   // echo "<span class='class2'><a href = 'annual_report.pdf' target='_blank'>Your PDF Has Been Created<img src='/images/lg_pdf.gif'></a></span>";
 
 
	echo "</div>";
	
	
	$filename = "annual_report.pdf";
 
header("Content-Length: " . filesize($filename));
header('Content-Type: application/msword');
header('Content-Disposition: attachment; filename=annual_report.pdf');
 
readfile($filename);
 
}
catch (PDFlibException $e) {
    die("PDFlib exception occurred in starter_pdfmerge sample:\n" .
	"[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
	$e->get_errmsg() . "\n");
}
catch (Exception $e) {
    die($e);
}
 
$p = 0;
}
?>
 
 
 
</body>
</html>

Open in new window

walker6o9

ASKER

Oh, that should say line 243, 244, and 245. I cut out some stuff to make the posted code a little shorter.

Michael701

That code MUST be a separate php program. Say you call it download_annual_report.php

then in your main page you can have <a href='download_annual_report.php'>Download report</a>

walker6o9

ASKER

Is there a way I can make that part be called rather than having to click on a link to make it work?

Michael701

you could use
location('download_annual_report.php');
at the end of your existing code.

Note: If you were to remove ALL html code output from the current program, then it could be included at the bottom of that code. and the very first line of your code MUST have <?PHP any white space will cause that header already sent message.

walker6o9

ASKER

Why does the html code need to be removed?

walker6o9

ASKER

Also, I tried adding
location('download_annual_report.php');

in place of the headers and I got the following error

Fatal error: Call to undefined function location() in C:\wamp\www\annualReport\index.php on line 194

Michael701

oops, me not thinking, it's

header("location: download_annual_report.php");

but you know what, this still needs the html to be removed.

Headers can not be issued after the start of any html to the browser.

walker6o9

ASKER

Is there anyway I can either
a) go to a new url
b) prompt to save

?

It seems like must be a way to do this even if you have html you need on the page

Michael701

If you have html on the page, then there must be a reason for the user to see it. this means you'll have to make a <a href> link to click on once they've read the page.

walker6o9

ASKER

I'm trying to do this without making a link. I already did this with a link, but that adds an extra step and it makes for better UX without it.

Michael701

well to do it without a link, you'll need to not send any html to the browser.

just go through and comment out all html references, if you get error "Headers already sent" then you'll know you missed something. Just make sure the very first line is <?PHP

walker6o9

ASKER

I have html that has to come before the php though in order to set up the title and some checkboxes.

Michael701

Ok then the user does have to view the page to see the title and check boxes. this means that you can't automatically just to the download page.

walker6o9

ASKER

I don't want to automatically download the page. I want it to automatically download a pdf when my php function runs.

Michael701

Is the pdf function a separate program? If it's part of a program that generates html to the browser then you can't issue the header commands to force the download.

walker6o9

ASKER

Okay, so I have an idea for how to fix this that you may be able to help me with.

Here's my issue. I have a bunch of checkboxes that user may or may not click on. When they press a submit button, that information needs to be passed through a php function, which creates a pdf. After the pdf is created, it needs to be automatically loaded.

If there is a way I can pass the information involving whether or not the checkboxes have been clicked on to a separate php file, then I can use the header program to automatically load the pdf. But I don't know how to do that.

Michael701

so is your question how to know if a checkbox has been checked?

they are available (if checked) as $_POST['checkbox_name']['value']

walker6o9

ASKER

no, i figured out what i was asking is not possible

walker6o9

ASKER

Can you use fopen or any other function in php to open a file in a new window or save it to a disk?

Michael701

not from php, you could use java script to open a new window.

walker6o9

ASKER

I got it working.