Creating a HTML table of BMI values

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I am looking to build an HTML table with BMI values based on these 4 input values: ‘min_weight’, ‘max_weight’ (input in kg) ‘min_height’, ‘max_height’ (input in cm)

The finished table will have rows headed by ‘min_weight’ to ‘max_weight’ (incremented in steps of 5), and columns headed by ‘min_height’ to ‘max_height’ (incremented in steps of 5). The formula used to calculate these BMI values is: weight/height

So far I have created the form that gathers the input data for the table. I am new to PHP and am currently figuring out the basics and I will be grateful for any help/guidance given.

What I have tried:

<pre lang="HTML">
<!DOCTYPE html>
<html>
<head>
<form action="bmi.php" method="get" id="bmi">
    <table border="1">
      <tr>
        <th scope="col">Key</th>
        <th scope="col">Value</th>
      </tr>
      <tr>
        <td><label for="min_weight">Minimum Weight (min_weight)</label></td>
        <td>
          <input name="min_weight" type="text" class="larger" id="min_weight" value="50" size="5" />
        </td>
      </tr>
      <tr>
        <td><label for="max_weight">Maximum Weight (max_weight)</label></td>
        <td><input name="max_weight" type="text" class="larger" id="max_weight" value="90" size="5" /></td>
      </tr>
      <tr>
        <td><label for="min_height">Minimum Height (min_height)</label></td>
        <td><input name="min_height" type="text" class="larger" id="min_height" value="150" size="5" /></td>
      </tr>
      <tr>
        <td><label for="max_height">Maximum Height (max_height)</label></td>
        <td><input name="max_height" type="text" class="larger" id="max_height" value="190" size="5" /></td>
      </tr>
      <tr>
        <td><label for="submit">Submit</label></td>
        <td><input type="submit" name="submit" id="submit" value="Submit" class="larger" /></td>
      </tr>
    </table>
  </form>
</body>
</html>

Posted 15-Aug-21 13:00pm

The Melon

Updated 15-Aug-21 22:30pm

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[no name] 16-Aug-21 1:00am

BMI is a function of weight and height (and sometimes age). The usual thing is to just prompt for those variables and give one answer; not a table.

The Melon 17-Aug-21 20:22pm

but I'm supposed to create a table with the 4 input values using a mix of javascript and php

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Richard MacCutchan · Answer 1 · 2021-08-15T22:30:00

Solution 1

You just need some loops to generate the table data. for example this will generate a row of items with weights from 10 to 35:

PHP

echo "<tr>\n";
for ($weight = 10; $weight < 40; $weight += 5)
{
  echo "<td>$weight</td>";
}
echo "\n</tr>\n";

You just need to add similar loops for the other values.

Posted 15-Aug-21 22:30pm

Richard MacCutchan

Updated 15-Aug-21 22:34pm

v2