Testing App
<?php
  echo "Output:\n\n";
  xdebug_start_code_coverage();
  include 'presentations/slides/intro/tests/basic.t';
  $cc = xdebug_get_code_coverage();
  xdebug_stop_code_coverage();

  $clean = array();
  $clean[$test] = $cc[$test];
 
  foreach ($clean as $file => $cc) {
    echo "<pre>";
    $fc = file($file);
    $line_nos = array_keys($cc);
    foreach ($fc as $ln => $line) {
      if (in_array($ln + 1, $line_nos)) {
        $bgc = "aaaaaa";
      } else {
        $bgc = "dddddd";
      }
      echo "<div style='background-color: #$bgc'>";
      echo @sprintf("%3d [%2d]:\t", $ln + 1, $cc[$ln + 1]);
      echo htmlspecialchars($line);
      echo "</div>";
    }
    echo "</pre>";
  }
?>
Output
Output: