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well I get this error trying to use php class FPDF:
FPDF error: Some data has already been output, can't send PDF file (output started at
/mnt/webc/e1/12/5691512/htdocs/adminpanel/fpdf/test.php:1)
My test.php
<?php
require_once("fpdf.php");
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>
There are no blanks or anything… So where is the error???
Some editors adds BOM at the start of a file.
View your file in hex and remove it