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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
228 | if ( !function_exists('check_admin_referer') ) : |
229 | function check_admin_referer($action = -1) { |
230 | $adminurl = strtolower(get_settings('siteurl')).'/wp-admin'; |
231 | $referer = strtolower(wp_get_referer()); |
232 | if ( !wp_verify_nonce($_REQUEST['_wpnonce'], $action) && |
233 | !(-1 == $action && strstr($referer, $adminurl)) ) { |
234 | wp_nonce_ays($action); |
235 | die(); |
236 | } |
237 | do_action('check_admin_referer', $action); |
238 | } |
239 | endif; |
240 |
|
241 | if ( !function_exists('check_ajax_referer') ) : |
242 | function check_ajax_referer() { |
243 | $cookie = explode('; ', urldecode(empty($_POST['cookie']) ? $_GET['cookie'] : $_POST['cookie'])); // AJAX scripts must pass cookie=document.cookie |
244 | foreach ( $cookie as $tasty ) { |
245 | if ( false !== strpos($tasty, USER_COOKIE) ) |
246 | $user = urldecode(substr(strstr($tasty, '='), 1)); // Nasty double encoding |