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