exp.php

// I don't think this works...

echo "<td><div class='days'><span>". ($v.if(isset($arr[$v])) { echo $arr[$v]; }) . "</span></div></td>"


// Try this instead....

if(isset($arr[$v])) { 
  echo "<td><div class='days'><span>". $v.$arr[$v]; . "</span></div></td>"
} else {
  echo "<td><div class='days'><span>". $v ."</span></div></td>"
}