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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 |
|---|---|
| 226 | if ( !function_exists('check_admin_referer') ) : |
| 227 | function check_admin_referer($action = -1) { |
| 228 | $adminurl = strtolower(get_option('siteurl')).'/wp-admin'; |
| 229 | $referer = strtolower(wp_get_referer()); |
| 230 | if ( !wp_verify_nonce($_REQUEST['_wpnonce'], $action) && |
| 231 | !(-1 == $action && strstr($referer, $adminurl)) ) { |
| 232 | wp_nonce_ays($action); |
| 233 | die(); |
| 234 | } |
| 235 | do_action('check_admin_referer', $action); |
| 236 | }endif; |
| 237 | |
| 238 | if ( !function_exists('check_ajax_referer') ) : |
| 239 | function check_ajax_referer() { |
| 240 | $cookie = explode('; ', urldecode(empty($_POST['cookie']) ? $_GET['cookie'] : $_POST['cookie'])); // AJAX scripts must pass cookie=document.cookie |
| 241 | foreach ( $cookie as $tasty ) { |
| 242 | if ( false !== strpos($tasty, USER_COOKIE) ) |
| 243 | $user = substr(strstr($tasty, '='), 1); |
| 244 | if ( false !== strpos($tasty, PASS_COOKIE) ) |