danielebarchiesi@2: <?php
danielebarchiesi@2: 
danielebarchiesi@2: /**
danielebarchiesi@2:  * @file
danielebarchiesi@2:  * Installation/uninstallation related functions for the image_captcha module.
danielebarchiesi@2:  */
danielebarchiesi@2: 
danielebarchiesi@2: /**
danielebarchiesi@2:  * Implements hook_requirements().
danielebarchiesi@2:  */
danielebarchiesi@2: function image_captcha_requirements($phase) {
danielebarchiesi@2:   $requirements = array();
danielebarchiesi@2:   $t = get_t();
danielebarchiesi@2:   if ($phase == 'install') {
danielebarchiesi@2:     // _image_captcha_check_setup() is defined in image_captcha.module.
danielebarchiesi@2:     module_load_include('module', 'image_captcha');
danielebarchiesi@2:     // Check if the GD library is available and raise an error when not.
danielebarchiesi@2:     if (_image_captcha_check_setup(FALSE) & IMAGE_CAPTCHA_ERROR_NO_GDLIB) {
danielebarchiesi@2:       $requirements['image_captcha_requires_gd'] = array(
danielebarchiesi@2:         'title' => $t('Image CAPTCHA requires GD library'),
danielebarchiesi@2:         'description' =>
danielebarchiesi@2:           $t('The Image CAPTCHA module can not be installed because your PHP setup does not provide the <a href="!gddoc">GD library</a>, which is required to generate images.',
danielebarchiesi@2:             array('!gddoc' => 'http://www.php.net/manual/en/book.image.php',)
danielebarchiesi@2:           ),
danielebarchiesi@2:         'severity' => REQUIREMENT_ERROR,
danielebarchiesi@2:       );
danielebarchiesi@2:     }
danielebarchiesi@2:   }
danielebarchiesi@2:   return $requirements;
danielebarchiesi@2: }
danielebarchiesi@2: 
danielebarchiesi@2: /**
danielebarchiesi@2:  * On uninstall: remove module variables and clear variable cache
danielebarchiesi@2:  */
danielebarchiesi@2: function image_captcha_uninstall() {
danielebarchiesi@2:   db_delete('variable')
danielebarchiesi@2:     ->condition('name', db_like('image_captcha_') . '%', 'LIKE')
danielebarchiesi@2:     ->execute();
danielebarchiesi@2:   cache_clear_all('variables', 'cache');
danielebarchiesi@2: }