$PAGE_NUM variable is always the same. #3382

Tadaz · 2024-01-24T16:58:00Z

I tried to calculate the X distance for my pagination based on the $PAGE_NUM and $PAGE_COUNT variables. Apparently, for every page, $PAGE_NUM will return the last page number. Basically, $PAGE_NUM is always equal to $PAGE_COUNT. Looks like a bug to me.

Calculations snippet:

$pns = strlen($PAGE_NUM) - 1;
$pcs = strlen($PAGE_COUNT) - 1;
$x = 517 - ($pns - pcs) * 6;
$pdf->page_text($x, $y, "Page {PAGE_NUM} of {PAGE_COUNT}", $font, $size, [0, 0, 0]);

You can use this snippet to see that the $PAGE_NUM variable is always the same.

$pdf->page_text($x, $y, "Page " . $PAGE_NUM . " of {PAGE_COUNT}", $font, $size, [0, 0, 0]);

The text was updated successfully, but these errors were encountered:

bsweeney · 2024-01-25T02:25:19Z

Not a bug. You're using the $PAGE_NUM variable to calculate the width. Presumably you're running this logic at the end of the document so, yes, the calculated value of $x will be the same for all pages. It would help to see more context.

Tadaz · 2024-01-25T10:27:42Z

The whole blade file. Changing the script's location just after the opening tag does not help. By the way, I am using v.2.0.0.

<!DOCTYPE html>
<html lang="en-gb">
<head>
   ADDING SOME RAW CSS HERE
</head>

<body>
<div class="header">
    <div class="logo">
        <img src="{{ asset('images/logo.png') }}" width="50%">
    </div>
</div>

<div class="two-columns>
    <div class="service">{{ $serviceName }}</div>
    <div class="date">{{ $date }}</div>
</div>

<div class="title">
    {{ $title }}
</div>

<div class="author">
    {{ $authorName }}
</div>

<div class="content">
    {!! $content !!}
</div>

<script type="text/php">
      if (isset($pdf)) {
        $h = $pdf->get_height();

        $size = 9;
        $font = $fontMetrics->getFont("Roboto");
        $textHeight = $fontMetrics->getFontHeight($font, $size);
        $y = $h - $textHeight - 8;

        $pns = strlen($PAGE_NUM) - 1;
        $pcs = strlen($PAGE_COUNT) - 1;
        $x = 517 - ($pns - pcs) * 6;
        $pdf->page_text($x, $y, "Page {PAGE_NUM} of {PAGE_COUNT}", $font, $size, [0, 0, 0]);
      }
</script>
</body>
</html>

bsweeney · 2024-01-25T13:19:23Z

Because you want to re-calculate the position on each page a page script would be more appropriate.

I'd recommend not using embedded script if you can. Rewriting what you currently have, the following can be used on the back end:

$canvas = $dompdf->getCanvas();
$canvas->page_script(function ($pageNumber, $pageCount, $canvas, $fontMetrics) {
    $h = $canvas->get_height();

    $size = 9;
    $font = $fontMetrics->getFont("Roboto");
    $textHeight = $fontMetrics->getFontHeight($font, $size);
    $y = $h - $textHeight - 8;

    $pns = strlen($PAGE_NUM) - 1;
    $pcs = strlen($PAGE_COUNT) - 1;
    $x = 517 - ($pns - pcs) * 6;
    $canvas->text($x, $y, "Page $pageNumber of $pageCount", $font, $size, [0, 0, 0]);
});

But if you need to use embedded script, here's the equivalent for that implementation:

<script type="text/php">
    if (isset($pdf)) {
        $pdf->page_script(function ($pageNumber, $pageCount, $canvas, $fontMetrics) {
            $h = $canvas->get_height();
        
            $size = 9;
            $font = $fontMetrics->getFont("Roboto");
            $textHeight = $fontMetrics->getFontHeight($font, $size);
            $y = $h - $textHeight - 8;
        
            $pns = strlen($PAGE_NUM) - 1;
            $pcs = strlen($PAGE_COUNT) - 1;
            $x = 517 - ($pns - pcs) * 6;
            $pdf->text($x, $y, "Page $pageNumber of $pageCount", $font, $size, [0, 0, 0]);
        });
    }
</script>

bsweeney added the question label Jan 25, 2024

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

$PAGE_NUM variable is always the same. #3382

$PAGE_NUM variable is always the same. #3382

Tadaz commented Jan 24, 2024

bsweeney commented Jan 25, 2024 •

edited

Tadaz commented Jan 25, 2024

bsweeney commented Jan 25, 2024 •

edited

$PAGE_NUM variable is always the same. #3382

$PAGE_NUM variable is always the same. #3382

Comments

Tadaz commented Jan 24, 2024

bsweeney commented Jan 25, 2024 • edited

Tadaz commented Jan 25, 2024

bsweeney commented Jan 25, 2024 • edited

bsweeney commented Jan 25, 2024 •

edited

bsweeney commented Jan 25, 2024 •

edited