How to solve the (Uncaught Exception: FPDF error) when trying to generate PDF with PHP

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How to solve the (Uncaught Exception: FPDF error) when trying to generate PDF with PHP

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#1 by (1 votes)

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Error trying to create a PDF file with PHP and the FPDF library

Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can not send PDF file (output started at C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ ord_com.php: 68) in C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ fpdf \ fpdf.php: 271 Stack trace: 0 C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ fpdf \ fpdf.php (1052): FPDF-> Error ('Some data has a ...') # 1 C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ fpdf \ fpdf.php (999): FPDF-> _checkoutput () # 2 C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ ord_com.php (538): FPDF-> Output () # 3 {main} thrown in C: \ xampp \ htdocs \ paginaoctago \ temp \ lev_6 \ fpdf \ fpdf.php on line 271

The code is as follows:

<body>
    <script src="js/main.js">
    </script> 
<script src="consultas.js">

</script>
    <script src="funciones_de_ord_comp.js">

    </script>


<?php
require('fpdf/fpdf.php');

$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'¡Hola, Mundo!');
$pdf->Output();

?>
</body>

php pdf fpdf

asked by Cesar Velasquez 28.05.2018 в 21:28

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1 answer

Doubt Scanner class in Java Generate model for the response of an api

score 1 · Accepted Answer

The solution was to remove all HTML visuals by creating a separate PHP file just to show the PDF

<?php
    require('fpdf/fpdf.php');

    $pdf = new FPDF();
    $pdf->AddPage();
    $pdf->SetFont('Arial','B',16);
    $pdf->Cell(40,10,'¡Hola, Mundo!');
    $pdf->Output();

    ?>

To save without displaying it you can use by placing the parameters of the file name in the > output

$pdf->output("nombre_archivo.pdf","F")

If you want you can use variables such as

$filename = "nombre_del_archivo.pdf";
output($filename,"F");