DrupalAPI.de

1. drupal
   1. drupal6
   2. drupal7

Verify if Drupal is installed.

Code

./install.php, line 150

<?php
function install_verify_drupal() {
  // Read the variable manually using the @ so we don't trigger an error if it fails.
  $result = @db_query("SELECT value FROM {variable} WHERE name = '%s'", 'install_task');
  if ($result) {
    return unserialize(db_result($result));
  }
}
?>