Php FPDI and FPDF open pdf file and edit one page?

I use this FPDI and FPDF script (in code snippet) to open pdf file and to stamp it in php, but there is the problem with the server "internal server error" when i try to stamp pdf file with 130 pages. AND there is the problem if i try to join this 130 pages as well without stamping. (the problem is on hosting server, it works on localhost)

so i wanted to open pdf file and parse it back with  file_get_contents($filename) and i wrote ...

$my_file = file_get_contents($filename);
$pdf =& new FPDF();
$pdf->buffer = $my_file;  
$pdf->Output($name."_go.pdf", 'D');

and its working! but...
i want now to stamp just one page, is that possible? how can i do that ?
$pdf =& new FPDI();
		
		
		// set the sourcefile
		$pages=$pdf->setSourceFile($filename);
		
			 
		
		
		// import pages one after the other
		for($i = 1; $i < $pages; $i ++) {
		    // add a page
		    //echo memory_get_usage() . "\n";
		    $pdf->AddPage();
		    $tplIdx = $pdf->importPage($i);
		    // use the imported page and place it at point 10,10 with a width of 100 mm
		    $pdf->useTemplate($tplIdx);
		 	echo memory_get_usage();
		    // write text with link to www.fpdf.org website
		    $pdf->SetFont('Arial');
		    $pdf->SetTextColor(255,102,102);
		    $pdf->SetXY(15, 15); // X (cm),  Y (cm)
		    $pdf->Write(0,$signature_text,'http://www.address.cc');
 
		    //$pdf->Write(0,'w w w . f p d f . o r g');
		}
		$pdf->Output('newpdf.pdf', 'D');

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galic1987Asked:
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khaledfConnect With a Mentor Commented:
it is very likely that the problem is caused by memory size in php
increase your php memory size to 32 and see if it works. to test if this is the case try to put this line at the top of your code

ini_set('memory_limit', '32M' );

or

ini_set('memory_limit', '64M' );
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