using tcpdf to export current php file - php

Question

i have a huge table in my php page that contains alot of php coding inside it
i want to export it using tcpdf
the example in samples of thier website prints html as a variable and export it like that
$tbl = <<<EOD
<table cellspacing="0" cellpadding="1" border="1">
<tr>
<td rowspan="3">COL 1 - ROW 1<br />COLSPAN 3</td>
<td>COL 2 - ROW 1</td>
<td>COL 3 - ROW 1</td>
</tr>
<tr>
<td rowspan="2">COL 2 - ROW 2 - COLSPAN 2<br />text line<br />text line<br />text line<br />text line</td>
<td>COL 3 - ROW 2</td>
</tr>
<tr>
<td>COL 3 - ROW 3</td>
</tr>
</table>
EOD;
my table has many many sql and php coding ,,,,etc
any php code i put inside it not appeared on output
how to print it?
and here is my table i want to print
<table class="table" width="95%">
<tbody>
<tr >
<td width="20" class="tabletop">م</td>
<td class="tabletop" >name</td>
<td class="tabletop" style="width:120px">date</td>
<td class="tabletop" style="width:120px">note1</td>
<td class="tabletop" style="width:100px">note2</td>
<td class="tabletop" style="width:90px">note3</td>
</tr>
<? $res=mysql_query($sql);
while($resArr=mysql_fetch_array($res)){ ?>
<tr style="width:700px">
<td class="tabletext"><?= ++$serial;?></td>
<td class="tabletext" ><?= $resArr[stName];?></td>
<td class="tabletext"><?= $resArr['date'];?></td>
<td class="tabletext" ><?= $resArr[matName];?></td>
<td class="tabletext" ><? if($resArr[exam]==1) echo "work";else echo "final";?></td>
<td class="tabletext" ><? if($resArr[exam_type]==1) echo "prac";else echo "test";?></td>
</tr>
<? }?>
</tbody>
</table>

Answer 1

<?php
$print = '<table class="table" width="95%">
<tbody>
<tr >
<td width="20" class="tabletop">م</td>
<td class="tabletop" >name</td>
<td class="tabletop" style="width:120px">date</td>
<td class="tabletop" style="width:120px">note1</td>
<td class="tabletop" style="width:100px">note2</td>
<td class="tabletop" style="width:90px">note3</td>
</tr>';
$res = mysql_query($sql);
while ( $resArr = mysql_fetch_array($res) ){
$print .= '
<tr style="width:700px">
<td class="tabletext">'.$serial.'</td>
<td class="tabletext" >'.$resArr['stName'].'></td>
<td class="tabletext">'.$resArr['date'].'></td>
<td class="tabletext" >'.$resArr['matName'].'></td>
<td class="tabletext">';
if($resArr['exam']==1){
$print .= 'work';
}else{
$print .= 'final';
}
$print .= '</td><td class="tabletext" >';
if($resArr['exam_type']==1){
$print .= "prac";
}else{
$print .= "test";
}
$print .= '</td></tr>';
}
$print .= '</tbody></table>';
then simply use the variable $print