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php – TCPDF / FPDF – Page break issue

Posted by: admin July 12, 2020 Leave a comment

Questions:

I’m trying to create a PDF file with a table of data.. But when a page break is met it jumps to a new page everytime a new multicell is added to the page at the break point level..!?

I have tried to do exactly the same with TCPDF, but still the same issue with a page break each time a new cell i added around the page break point level…

example:

http://www.online-økonomi.dk/_tst_fpdf.php

require_once '../class/download/fpdf/fpdf.php';
class File_PDF {
private $pdf;
private $col_product = 25;
private $col_unit = 12;
private $col_price = 20;
private $col_count = 14;
private $col_discount = 12;
private $col_vat = 12;
private $col_sum = 22;
private $width = 200;
private $line_height = 4.2;
private $margin_top = 30;
public function generate(){
$this->pdf = new FPDF();
$this->pdf->AddPage();
$this->pdf->SetDisplayMode('real');
$this->pdf->SetAutoPageBreak(true, 150);
if($this->products){
$i = 0;
$this->color_light();
foreach($this->products as $product){
$this->add_product($product, $i % 2 ? true:false);
$i++;
}
}
$this->pdf->Output();
}
private function add_product($product, $fill){
$this->txt();
$x = $this->width;
$y = $this->pdf->GetY();
$this->cell_sum($this->col_sum, $x, $y, $product['sum'] / 100, 'R', $fill);
$this->cell_vat($this->col_vat, $x, $y, $product['vat_percent'], 'R', $fill);
$this->cell_discount($this->col_discount, $x, $y, $product['discount_percent'] / 100, 'R', $fill);
$this->cell_count($this->col_count, $x, $y, $product['count'] / 100, 'R', $fill);
$this->cell_price($this->col_price, $x, $y, $product['price'] / 100, 'R', $fill);
$this->cell_unit($this->col_unit, $x, $y, $product['unit_name'], 'L', $fill);
$this->cell_name(0, $x, $y, $product['name'], 'L', $fill);
$this->cell_product($this->col_product, $x, $y, $product['product_id_'], 'L', $fill);
}
private function cell_sum($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_vat($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_discount($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_count($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_price($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_unit($width, &$x, $y, $str, $align, $fill=false){
$this->cnstr_cell($width, $x, $y, $str, $align, $fill);
}
private function cell_name($width, &$x, $y, $str, $align, $fill=false){
$this->pdf->SetXY($this->col_product + 10, $y);
$this->pdf->MultiCell($x - $this->col_product - 10, $this->line_height, $str, 0, $align, $fill);
}
private function cell_product($width, &$x, $y, $str, $align, $fill=false){
$this->pdf->SetXY(10, $y);
$this->pdf->MultiCell($this->col_product, $this->line_height, $str, 0, $align, $fill);
}
private function cnstr_cell($width, &$x, $y, $str, $align='L', $fill=false){
$x -= $width;
$this->pdf->SetXY($x, $y);
$this->pdf->MultiCell($width, $this->line_height, $str, 0, $align, $fill);
}
private function color_light(){
$this->pdf->SetFillColor(200, 200, 200);
}
private function txt(){
$this->pdf->SetFont('Arial', '', 8.5);
}
private function txt_marked(){
$this->pdf->SetFont('Arial', 'B', 8.5);
}
private $products = array(
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
),
array(
'product_id_' => 'ADS1550',
'name' => 'name',
'unit_name' => 'pcs',
'price' => 182450000,
'count' => 310000,
'discount_percent' => 19900,
'vat_percent' => 0,
'sum' => 1587057200
)
);
}
$PDF = new File_PDF();
$PDF->generate();
How to&Answers:

The problem is that in the Cell() method (which is called in MultiCell()) FPDF allways adds a new page if the the current Y position + the height of the new cell is greater than the allowed page height.

The default page height seems to be 297, with SetAutoPageBreak() you substract 150 from it. So when Y + cell_height is graeter than 147 you allways get a new page when calling your cnstr_cell().

To prevent this you need to call AddPage() by yourself. Add this check in your add_product() method:

$x = $this->width; $y = $this->pdf->GetY(); if (($y + $this->line_height) >= 147) { $this->pdf->AddPage(); $y = 0; // should be your top margin } 

Btw. I also had to generate a dynamic PDF recently, I ended up using wkhtmltopdf, it was way more easy to use and customize than all the PHP libraries. I suggest to take a look at it.