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   1. drupal6
   2. drupal7

Implementation of hook_install().

Code

modules/php/php.install, line 7

<?php
function php_install() {
  $format_exists = db_result(db_query("SELECT COUNT(*) FROM {filter_formats} WHERE name = 'PHP code'"));
  // Add a PHP code input format, if it does not exist. Do this only for the
  // first install (or if the format has been manually deleted) as there is no
  // reliable method to identify the format in an uninstall hook or in
  // subsequent clean installs.
  if (!$format_exists) {
    db_query("INSERT INTO {filter_formats} (name, roles, cache) VALUES ('PHP code', '', 0)");
    $format = db_result(db_query("SELECT MAX(format) FROM {filter_formats}"));

    // Enable the PHP evaluator filter.
    db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, 'php', 0, 0)", $format);

    drupal_set_message(t('A !php-code input format has been created.', array('!php-code' => l('PHP code', 'admin/settings/filters/' . $format))));
  }
}
?>