Inserting line breaks into PDF

If you are using fpdf, in order to be able to use line breaks you will need to use a multi-line text cell as described here.

If you use this, then line breaks in your text should be interpreted and converted correctly.

Just a quick example:

$pdf->Multicell(0,2,"This is a multi-line text string\nNew line\nNew line"); 

Here, 2 is the height of the multi-line text box. I don't know what units that's measured in or if you can just set it to 0 and ignore it. Perhaps try it with a large number if at first it doesn't work.

Your code reads

$pdf->InsertText('Line one\n\nLine two');

I don't know about the PDF library you're using but normally if you want \n to be interpreted as a line break you must use double quotes in PHP, e.g.

$pdf->InsertText("Line one\n\nLine two");

You state that

2 is the height of the multi-line text box

No it's not. 2 is the distance between lines of text.

I don't think there is a real way for calculating the height of the actual resulting text box, unless you use GetY() and then subtract the original Y value used in your SetXY() statement for placing the Multicell in the first place.

After having so many nightmares, I found a solution.

utf8_decode(chr(10))

I tried \n, <br/> and chr(10) but nothing worked. Then I realized that it was utf-8 and just tried the above one. It works fine with MultiCell but not with Cell.

The solution I've found was:

$text = 'Line one\n\nLine two');
$text = explode('\n', $text);

foreach ($text as $txt){
    $pdf->Write($txt);
    $pdf->Ln();
}

So this way, you may have any number of \n in any position, if you're getting this text dinamically from the database, it will break lines correctrly.

pars_text.append(content[0])
pdf.multi_cell(w=190, txt = content[0])
pdf.ln();  # this