datagrid - Programming a grid table php -

i have grid table (example attached). user input width (column) , height (row) form. program has output price based on inputted data, if @ example, if width 800 , height 1000 price 337. ideas how approach this? i've never done before.

i know broad question .. direction or tutorial appreciated.

you need like:

// price matrix: first index y-axis, second x-axis $prices = [     600 => [         600 => 224,         700 => 246,         800 => 266,         900 => 291,         1000 => 313     ],     // here put rest... ];  //then echo table; echo "<table><tr>"; echo "<td></td>"; // first empty cell; foreach ($prices[array_keys($prices)[0]] $y_axis => $xprices){     echo "<td>".$y_axis."</td>"; } echo "</tr>";//finish setting header foreach ($prices $y_axis => $xprices) {     echo "<tr>";     echo "<td>".$y_axis."</td>";     foreach($xprices $y_axis=> $price){         echo "<td>".$price."</td>";     }     echo "</tr>"; } echo "</table>"; 

this more orientation, in right direction.

this generates table header , first row:

<table>     <tr>         <td></td>         <td>600</td>         <td>700</td>         <td>800</td>         <td>900</td>         <td>1000</td>    </tr>    <tr>        <td>600</td>        <td>224</td><td>246</td><td>266</td>        <td>291</td><td>313</td>    </tr> </table> 

online php scrit: https://3v4l.org/by45n (get html fro here)
html code evaluator: http://www.w3schools.com/html/tryit.asp?filename=tryhtml_intro (and put here)