helppp

<head>
    </head>
    <body>
       <style>
           table, tr, td, th{
               border: 1px solid black;
               text-align: center;
               margin: 0;
               padding: 0;
           }
        </style>
        <table>
           <th>
               <p> </p>
           </th>
            <?php
           for($i=1;$i<=10;$i++){
                echo "<th>".($i*12)."</th>";
            }
            for($a=12;$a<=120;$a=$a+12){

                echo "<tr>";
                echo "<th>".$a."</th>";
                for($b=12;$b<=120;$b=$b+12){
						    if($a == $b)
					{
						echo "<td style='background-color: yellow'>".($a*$b)."</td>";
					}
					else if($a==$b)
					{
						echo "<td>".($a*$b)."</td>";
					}
					echo "<td>".($a*$b)."</td>";
                }
                echo "</tr>";
            }
            ?>
        </table>
    </body>