php - echo multiple variables with a space between each into echo'd table cell -

php - echo multiple variables with a space between each into echo'd table cell -

<?php if(isset($_session['guest2first'])) echo '<tr><td>'; echo '<input type="text" name="guest2ticket" id="guest2ticket" onblur="isticketnumber(this)" size ="22"/>'; echo '</td><td>'; echo $first["guest2first"] , ' ', $middle["guest2middle"] , ' ',$last["guest2last"]; echo '</td></tr>'?>

i have form uses $_session variables fill in of content using code above.

what need

check if variable set if echo out new table row containing 2 cells in first cell echo out input box in sec cell echo out 3 variables space between each

everything seems work fine except number 4. nil is echo'd sec cell.

im sure

echo $first["guest2first"] , ' ', $middle["guest2middle"] , ' ',$last["guest2last"];

is problem. how can prepare syntax accomplish desired result?

i think mixed var names , mean $_session, instead of $first, $middle, $last

<?php if(isset($_session['guest2first'])) echo '<tr><td>'; echo '<input type="text" name="guest2ticket" id="guest2ticket" onblur="isticketnumber(this)" size ="22"/>'; echo '</td><td>'; echo $_session["guest2first"] , ' ', $_session["guest2middle"] , ' ',$_session["guest2last"]; echo '</td></tr>'?>

php echo