Hi,
i generate a pdf file via fpdf libary which is preparing all the data and sending it the following way:
//Send to standard output
if(ob_get_length())
$this->Error('Some data has already been output, can\'t send PDF file');
if(php_sapi_name()!='cli')
{
//We send to a browser
header('Content-Type: application/pdf');
if(headers_sent())
$this->Error('Some data has already been output, can\'t send PDF file');
header('Content-Length: '.strlen($this->buffer));
header('Content-Disposition: inline; filename="'.$name.'"');
header('Cache-Control: private, max-age=0, must-revalidate');
header('Pragma: public');
ini_set('zlib.output_compression','0');
}
echo $this->buffer;
this works fine, the file is generated and the download window opens.
now my problem. after i downloaded or saved the pdf file the next click i do will creates an error. it doesn’t matter which link, yii always shows an error. when i check the error log it tells that the controller called the pdf creation (but in the adress line of the browser there is another page written). also the page i wanted to see is showed after the error output.
The error is: Cannot modify header information - headers already sent by (output started at /.../app/protected/extensions/pdf/fpdf_fpdi/fpdf.php:1026)
after the error output it is written:
HTTP/1.1 200 OK Date: Sat, 23 Apr 2011 20:23:27 GMT Server: Apache X-Powered-By: PHP/5.3.5 Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Keep-Alive: timeout=15, max=98 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html 207f
followed by the page i clicked.
Maybe Yii produced an error after fpdf was sending the outputput to the browser, saved the error and is showing it on the next page.
how can i avoid this? can i clean the last error? do i have to made special settings in yii before i output a file to the browser? i also tested to send the output with sendFile but with the same result.
thanks for tips or help!
Kabinenkoffer