What are the best practices for generating multi-page documents with varying layouts (e.g., header/footer changes) in PHP using PDF libraries?

When generating multi-page documents with varying layouts in PHP using PDF libraries, it is important to utilize the library's functionality for adding headers and footers dynamically as each page is generated. This can typically be achieved by defining separate header and footer templates and applying them to each page as needed. Additionally, keeping track of the current page number and adjusting the layout accordingly will help ensure a seamless transition between pages. 

// Example code using TCPDF library to generate multi-page PDF with varying layouts

require_once('tcpdf/tcpdf.php');

$pdf = new TCPDF();

// Define header and footer templates
$pdf->setHeaderCallback(function($pdf) {
    // Define header content
    $header = 'Header content here';
    $pdf->SetHeaderData('', 0, $header);
});

$pdf->setFooterCallback(function($pdf) {
    // Define footer content
    $footer = 'Page ' . $pdf->getPageNum();
    $pdf->SetFooterData('', 0, $footer);
});

$pdf->AddPage();

// Generate content for the first page
$pdf->writeHTML('Content for page 1');

$pdf->AddPage();

// Generate content for the second page with different layout
$pdf->setPageFormat('A4', 'L');
$pdf->writeHTML('Content for page 2 with different layout');

$pdf->Output('multi_page_document.pdf', 'I');

Keywords

PDF libraries PHP multi-page documents header/footer changes varying layouts

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