在000webhost上使用PHP中的fpdf创建pdf看到一些错误[重复]

Question

This question already has an answer here:

• FPDF error: Some data has already been output, can't send PDF 11 answers

I have trying this code

<?php
require ("fpdf/fpdf.php");
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

But I see the below errors:

Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can't send PDF file (output started at /storage/ssd1/896/5392896/public_html/admin/case_pdf.php:1) in /storage/ssd1/896/5392896/public_html/admin/fpdf/fpdf.php:271 Stack trace: #0 /storage/ssd1/896/5392896/public_html/admin/fpdf/fpdf.php(1052): FPDF->Error('Some data has a...') #1 /storage/ssd1/896/5392896/public_html/admin/fpdf/fpdf.php(999): FPDF->_checkoutput() #2 /storage/ssd1/896/5392896/public_html/admin/case_pdf.php(28): FPDF->Output() #3 {main} thrown in /storage/ssd1/896/5392896/public_html/admin/fpdf/fpdf.php on line 271

</div>

Answer 1

try this before generating PDF

ob_end_clean();