get element from an array as a field name in PHP

Question

I have several fields from a mysql table (width,diameter etc). Instead of building up the strings from returned data one by one

  $rows = $wpdb->last_result; // Wordpress version

  foreach(array_chunk($rows, 5) as $i => $pair)
  {
    $width .= "<tr><td>Width</td>";
    $diameter .= "<tr><td>Diameter</td>";
    foreach($pair as $row) 
    {   
      $width .= "<td>$row->width mm</td>";
      $diameter .= "<td>$row->diameter mm</td>";
    }

    $width .= "</tr>";
    $diameter .= "</tr>";
  }

Can I turn thickness,diameter,width into an array and loop over them like this:

  foreach(array_chunk($rows, 5) as $i => $pair)
  { 
    $measures = array("width"=>"Width","diameter"=>"Diameter","thickness"=>"Thickness","hours"=>"Hours");
    foreach($measures as $measure=>$title)
    {
        $measure .= "<td>$title</td>";
    }  

    foreach($pair as $row) 
    {   
      foreach($measures as $measure=>$title)
      {
        $measure .= "<td>$row->".$measure." mm </td>";
      }      
    }
    foreach($measures as $measure=>$title)
    {
      $measure .= "</tr>";
    }  
  }

But I'm getting Object of class stdClass could not be converted to string error, so is it possible to do that?

There is a missing " in the diameter .= line

Jack M.
– Jack M.

2014-08-01 19:52:00 +00:00
Commented Aug 1, 2014 at 19:52 — Jack M.
– Jack M., Commented Aug 1, 2014 at 19:52

Community · Accepted Answer · 2017-05-23 12:11:39Z

1

This is not allowed:

"<td>$row->".$measure." mm </td>";

I think the concatenation is messing it up, try like this:

"<td>".$row->$measure." mm </td>";

This should be helpful.

edited May 23, 2017 at 12:11

CommunityBot

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answered Aug 1, 2014 at 19:53

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