What is the recommended tool or library in PHP for editing PDF files with form fields?

To edit PDF files with form fields in PHP, a recommended tool is the TCPDF library. TCPDF allows you to create, modify, and fill form fields in PDF files programmatically. By using TCPDF, you can easily generate PDF forms with editable fields, such as text boxes, checkboxes, and radio buttons.

require_once('tcpdf/tcpdf.php');

$pdf = new TCPDF();
$pdf->AddPage();

$pdf->SetFont('helvetica', '', 12);
$pdf->Cell(0, 10, 'Edit PDF Form Fields with TCPDF', 0, 1, 'C');

$pdf->AddFormField('text', 'field_name', 'Sample Text Field', '', 'helvetica', 12, '', 0, true);

$pdf->Output('edited_pdf.pdf', 'D');