“对跳线造成的不便”；fpdf“；php

我正在使用“fpdf”库生成pdf，我遇到的问题是，当数组从那里开始换行到第二页时，它不会以相同的顺序显示，并且每条记录占用一页

第一页上的数组正在正常加载，但当此数组需要转到第2页时，从第2页开始，每页数组中都会出现一条记录，直到加载完整个数组为止

factura.php

 <?php
//Activamos el almacenamiento en el buffer
ob_start(); 
if (strlen(session_id()) < 1) 
  session_start();
  

if (!isset($_SESSION["nombre"]))
{
  echo 'Debe ingresar al sistema correctamente para visualizar el reporte';
}
else
{
if ($_SESSION['compras']==1)
{


require"../../modelos/Compras/Cotizacion.php";
$compras= new Cotizacion();
$rsptav = $compras->cotizacion_cabecera($_GET["id"]);
//Recorremos todos los valores obtenidos
$regv = $rsptav->fetch_object(); 


require('FacturaConfig.php');


$pdf = new PDF_Invoice( 'P', 'mm', 'A4' );

$pdf->AddPage(); 

$cols=array( "#"=>10,
             "PRODUCTO"=>91,
             "CANTIDAD"=>16,
             "VALOR U."=>25,
             "IVA%"=>12,
             "IVA"=>14,
             "SUBTOTAL"=>22);
$pdf->addCols( $cols);

$cols=array( "#"=>"L",
             "PRODUCTO"=>"L",
             "CANTIDAD"=>"C",
             "VALOR U."=>"R",
             "IVA%" =>"R",
             "IVA" =>"R",
             "SUBTOTAL"=>"C");
$pdf->addLineFormat( $cols);
$pdf->addLineFormat($cols);

$y= 89;
    

$rsptad = $compras->cotizacion_detalle($_GET["id"]);
  
while ($regd = $rsptad->fetch_object()) {
    
     Static $a = 0;
      $a++;
      
  $line = array( "#"=>  "$a", 
              "PRODUCTO"=> utf8_decode("$regd->nombre_producto"),
                "CANTIDAD"=> "$regd->cantidad",
                "VALOR U."=> "$regd->precio_ventax2",
                "IVA%" => "$regd->porcentaje2",
                "IVA" => "$regd->iva_calc",
                "SUBTOTAL"=> "$regd->precio_ventax2");
                
                
            $size = $pdf->addLine( $y, $line );
            
            $y   += $size + 2;
             
           

            
}


$pdf->Output();




 }



else
{
  echo 'No tiene permiso para visualizar el reporte';
}

}
ob_end_flush();
?>

FacturaConfig.php

<?php
require('../../public/fpdf181/fpdf.php');
define('EURO', chr(128) );
define('EURO_VAL', 6.55957 ); 



class PDF_Invoice extends FPDF
{
 
// private variables
var $colonnes;
var $format;
var $angle=0;




 public function header()
   {
       
     $this->SetFont('Arial', 'B', '10');  
   
     $this->SetX(-40);
     $this->write(5, 'codigo header');
    $this->Image('logo.jpg', 0, 0, 20,'', 'jpg');
   
   $this->Ln(10);
    
     
   }
    
   public function footer()
   {
     $this->SetFont('Arial', 'B', '10');  
     $this->SetY(-15);
     $this->Write(5,'FOOTER');
    
     

   }



// public functions
function sizeOfText( $texte, $largeur )
{
    $index    = 0;
    $nb_lines = 0;
    $loop     = TRUE;
    while ( $loop )
    {
        $pos = strpos($texte, "\n");
        if (!$pos)
        {
            $loop  = FALSE;
            $ligne = $texte;
        }
        else
        {
            $ligne  = substr( $texte, $index, $pos);
            $texte = substr( $texte, $pos+1 );
        }
        $length = floor( $this->GetStringWidth( $ligne ) );
        $res = 1 + floor( $length / $largeur) ;
        $nb_lines += $res;
    }
    return $nb_lines;
}




function addCols( $tab )
{
    global $colonnes;
    
    $r1  = 10;
    $r2  = $this->w - ($r1 * 2) ;
    $y1  = 79;
    $y2  = $this->h - 50 - $y1;
    $this->SetXY( $r1, $y1 );
    $this->Rect( $r1, $y1, $r2, $y2, "D");
    $this->Line( $r1, $y1+6, $r1+$r2, $y1+6);
    $colX = $r1;
    $colonnes = $tab;
    while ( list( $lib, $pos ) = each ($tab) )
    {
        $this->SetXY( $colX, $y1+2 );
        $this->Cell( $pos, 1, $lib, 0, 0, "C");
        $colX += $pos;
        $this->Line( $colX, $y1, $colX, $y1+$y2);
        
    }
    
}

function addLineFormat( $tab )
{
    global $format, $colonnes;
    
    while ( list( $lib, $pos ) = each ($colonnes) )
    {
        if ( isset( $tab["$lib"] ) )
            $format[ $lib ] = $tab["$lib"];
    }
}



function addLine( $ligne, $tab )
{
    global $colonnes, $format;

    $ordonnee     = 10;
    $maxSize      = $ligne;

    reset( $colonnes );
    while ( list( $lib, $pos ) = each ($colonnes) )
    {
        $longCell  = $pos -2;
        $texte     = $tab[ $lib ];
        $length    = $this->GetStringWidth( $texte );
        $tailleTexte = $this->sizeOfText( $texte, $length );
        $formText  = $format[ $lib ];
        $this->SetXY( $ordonnee, $ligne-1);
        
        $this->MultiCell( $longCell, 4 , $texte, 0, $formText);
        if ( $maxSize < ($this->GetY()  ) )
            $maxSize = $this->GetY() ;
        $ordonnee += $pos;
    }
    return ( $maxSize - $ligne );
}




}
?>

PDF

第1页y 2

第3页