php.install

<?php


/**
 * @file
 * Install, update and uninstall functions for the php module.
 */

/**
 * Implements hook_enable().
 */
function php_enable() {
    $format_exists = (bool) db_query_range('SELECT 1 FROM {filter_format} WHERE name = :name', 0, 1, array(
        ':name' => 'PHP code',
    ))->fetchField();
    // Add a PHP code text format, if it does not exist. Do this only for the
    // first install (or if the format has been manually deleted) as there is no
    // reliable method to identify the format in an uninstall hook or in
    // subsequent clean installs.
    if (!$format_exists) {
        $php_format = array(
            'format' => 'php_code',
            'name' => 'PHP code',
            // 'Plain text' format is installed with a weight of 10 by default. Use a
            // higher weight here to ensure that this format will not be the default
            // format for anyone.
'weight' => 11,
            'filters' => array(
                // Enable the PHP evaluator filter.
'php_code' => array(
                    'weight' => 0,
                    'status' => 1,
                ),
            ),
        );
        $php_format = (object) $php_format;
        filter_format_save($php_format);
        drupal_set_message(t('A <a href="@php-code">PHP code</a> text format has been created.', array(
            '@php-code' => url('admin/config/content/formats/' . $php_format->format),
        )));
    }
}

/**
 * Implements hook_disable().
 */
function php_disable() {
    drupal_set_message(t('The PHP module has been disabled. Any existing content that was using the PHP filter will now be visible in plain text. This might pose a security risk by exposing sensitive information, if any, used in the PHP code.'));
}