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   1. drupal6
   2. drupal7

Choose which template file to actually render. These are all suggested templates from themes and modules. Theming implementations can occur on multiple levels. All paths are checked to account for this.

Code

includes/theme.inc, line 741

<?php
function drupal_discover_template($paths, $suggestions, $extension = '.tpl.php') {
  global $theme_engine;

  // Remove slashes or null to prevent files from being included from
  // an unexpected location (especially on Windows servers).
  $extension = str_replace(array("/", "\\", "\0"), '', $extension);

  // Loop through all paths and suggestions in FIFO order.
  $suggestions = array_reverse($suggestions);
  $paths = array_reverse($paths);
  foreach ($suggestions as $suggestion) {
    if (!empty($suggestion)) {
      $suggestion = str_replace(array("/", "\\", "\0"), '', $suggestion);
      foreach ($paths as $path) {
        if (file_exists($file = $path . '/' . $suggestion . $extension)) {
          return $file;
        }
      }
    }
  }
}
?>