在 PDF 中插入换行符

Question

I'm generating some PDF file on the fly using PHP. My problem is I need to insert line breaks in some part of the text that will be inserted in the PDF file. Something like:

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

So it prints:

Line one

Line two

I know \n doesn't work on PDF, but do you guys know any character or something that represents a line break on these files?

Answer 1

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.

Answer 2

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, eg

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

Answer 3

我为chr(10)更改了'\\n'并且它起作用了：

$pdf->MultiCell(0,5,utf8_decode($variable1 . chr(10) . $variable2),1);

Answer 4

Another option is to use TCPDF::Ln() . It adds a line to the PDF with the option to set the height.

If the newlines are within your content already then MultiCell() is probably the way to go, as others have mentioned, but I find I like using:

$pdf->Cell(0, 0, 'Line 1', 0, 0, 'C');
$pdf->Ln();
$pdf->Cell(0, 0, 'Line 2', 0, 0, 'C');

It confuses me that Cell() and MultiCell() take in different arguments so I tend to stick to using Cell() only. Also it reads like a newline character for the PDF the same as \\n reads like a newline character in text or <br> in HTML.

Answer 5

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.

Answer 6

I have simply replaced the " \\n " with " <br> " tag. Worked fine. It seems TCPDF render the text as HTML

$strText = str_replace("\n","<br>",$strText);
$pdf->MultiCell($width, $height,$strText, 0, 'J', 0, 1, '', '', true, null, true);

Answer 7

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 .

Answer 8

MultiCell($w, $h, 'text<br />', $border=0, $align='L', $fill=1, $ln=0,
    $x='', $y='', $reseth=true, $reseth=0, $ishtml=true, $autopadding=true,
    $maxh=0);

You can configure the MultiCell to read html on a basic level.

Answer 9

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.

Answer 10

$pdf->SetY($Y_Fields_Name_position);
$pdf->SetX(#);
$pdf->MultiCell($height,$width,"Line1 \nLine2 \nLine3",1,'C',1);

In every Column, before you set the X Position indicate first the Y position, so it became like this

Column 1

$pdf->SetY($Y_Fields_Name_position);
$pdf->SetX(#);
$pdf->MultiCell($height,$width,"Line1 \nLine2 \nLine3",1,'C',1);

Column 2

$pdf->SetY($Y_Fields_Name_position);
$pdf->SetX(#);
$pdf->MultiCell($height,$width,"Line1 \nLine2 \nLine3",1,'C',1);

Answer 11

也许为时已晚，但我以一种非常简单的方式解决了这个问题，我使用的是多单元格选项，文本来自表单，如果我使用输入字段来获取文本，我无法在任何地方插入换行符方式，但如果使用 textarea 字段，文本区域中的换行符是多单元格中的换行符......就是这样，即使我使用utf8_encode($text)选项来保留重音，它也能工作

Answer 12

或者只是在每个文本段落后尝试这个新行。

$pdf->Write(0, ' ', '*', 0, 'C', TRUE, 0, false, false, 0) ;

Answer 13

Another solutions (works with TCPDF)

Use HEREDOC for a long string. Put HERDOC for a CONST for example (define different languages)

$_prepare_const_EN = <<<EOT
this is a long string
and new line as well ...
EOT;

$define('STR_EN', $_prepare_const_EN);

$pdf->InsertText(STR_EN);

works for me wery well....

Answer 14

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