How to delete text from PDF using FPDI/ FPDF

Question

I Want to edit PDF in php using FPDI/FPDF.I want to replace particular text.I have try many solution but they are not giving the desired result.All are writing some new text in new position. I want to search some text and replace that text with a new text.
Is This Possible?If yes please explain.
Code:

    require_once('fpdf.php');
    require_once('fpdi.php');

    $pdf =& new FPDI();
    $pdf->AddPage();


    //Set the source PDF file
    $pagecount = $pdf->setSourceFile("test.pdf");

    //Import the first page of the file
    $tpl = $pdf->importPage(1);
    //Use this page as template
    $pdf->useTemplate($tpl);



    //Go vertical position
    $pdf->SetY(15);
    //Select Arial italic 8
    $pdf->SetFont('Arial','I',8);
    //Print centered cell with a text in it
    $pdf->Cell(0, 10, "Hello World", 0, 0, 'C');

     //want something like this
     $pdf->replace("old_text","new_text");    

     $pdf->Output("my_modified_pdf.pdf", "F");

Answer 1

It is not possible to edit a PDF document with FPDI and also it is not possible to replace text of an imported PDF page with FPDI.