twig_theme_test.module

<?php

/**
 * Implements hook_theme().
 */
function twig_theme_test_theme($existing, $type, $theme, $path) {
  $items['twig_theme_test_php_variables'] = array(
    'template' => 'twig_theme_test.php_variables',
  );
  return $items;
}

/*
 * Helper function to test PHP variables in the Twig engine.
 */
function _test_theme_twig_php_values() {

  // Prefix each variable with "twig_" so that Twig doesn't get confused
  // between a variable and a primitive. Arrays are not tested since they should
  // be a Drupal render array.
  return array(
    'twig_null' => array(
      'value' => NULL,
      'expected' => '',
    ),
    'twig_bool_false' => array(
      'value' => FALSE,
      'expected' => '',
    ),
    'twig_bool_true' => array(
      'value' => TRUE,
      'expected' => '1',
    ),
    'twig_int' => array(
      'value' => 1,
      'expected' => '1',
    ),
    'twig_int_0' => array(
      'value' => 0,
      'expected' => '0',
    ),
    'twig_float' => array(
      'value' => 122.34343,
      'expected' => '122.34343',
    ),
    'twig_string' => array(
      'value' => 'Hello world!',
      'expected' => 'Hello world!',
    ),
  );
}