php - In TCPDF how to tell if my table will be bigger than the page becouse in this case I would have to add a custom header for it -

in tcpdf how tell if table bigger page because in case have add custom header it. if use: $pdf->getaliasnumpage() compare before start table , @ beginning of each row don't seem work. $pdf->getaliasnumpage() if used second time return like: {:pnp:} hope can me this. code looks this:

<?     $table=""; $islasttable = 0; ($i = 0; $i<sizeof($ar); $i++) {         ($j = 0; $j<3; $j++)         {         if (isset ($ar[$i][$j]))         {             if($j==0)             {                 if ($islasttable == 1)                 {                 $table .= '</table><table border="1" style="text-align:center; vertical-align:middle; padding:5;border-bottopm:1px solid black;">';                  $islasttable = 0;                 }                 else                 {                 $table .= '<table border="1" style="text-align:center; vertical-align:middle; padding:5;">';                 }             $table .=   '<tr >                             <td colspan="3">gefehrdungsfaktor</td>                             <td colspan="8">'.$ar[$i][$j].'</td>                         </tr>';             }             if($j==1)             {             $table.='   <tr >                             <td colspan="3">gefahrebquelle</td>                             <td colspan="8">'.$ar[$i][$j].'</td>                                                         </tr>';             $flag = 1;              }             if($j==2)             {                  if($flag == 1)                 {                  $level = " top level2 with: ".$arraytogeneratetable[$i].' childs';             $table.='<tr >                         <td colspan="11">risiko</td>                     </tr>';              $table.='<tr >                         <td colspan="1" style="font-size: xx-small; background-color:#f3a505">gk  </td>                         <td colspan="5" style="background-color:#f3a505">(n)</td>                         <td colspan="2" style="background-color:#f3a505"> ?</td>                         <td colspan="2" style="background-color:#f3a505"></td>                         <td colspan="1" style="font-size: xx-small; background-color:#f3a505">gk  </td>                     </tr>';                  $table.='<tr >                         <td colspan="1" rowspan="'.(($arraytogeneratetable[$i])*2).'" style="background-color:grey">0</td>                         <td colspan="5" rowspan="2">'.$ar[$i][$j].'</td>                         <td colspan="1" rowspan="1">ja</td>                         <td colspan="1" rowspan="1">x</td>                         <td colspan="2" rowspan="2">&nbsp;</td>                         <td colspan="1" rowspan="'.(($arraytogeneratetable[$i])*2).'" style="background-color:grey;">0</td>                     </tr>                     <tr >                         <td colspan="1">nein'.'</td>                         <td colspan="1">x</td>                     </tr>';                 }                 else{                 $table.='<tr >                             <td colspan="5" rowspan="2">'.$ar[$i][$j].'</td>                             <td colspan="1">ja</td>                             <td colspan="1">x</td>                             <td colspan="2" rowspan="2">&nbsp;</td>                         </tr>                         <tr >                             <td>nein</td>                             <td>x'.'</td>                         </tr>';                 }                 $level = '';              $flag=0;             $islasttable = 1;             }            }         } } $table.='</table>'; $pdf->addpage(); $pdf->writehtml($table, true, false, true, false, '');  ?> 

one solution have:

    <style> table{  table-layout: fixed; } td{   max-height:20px; } </style> 

and can calculate number of lines.