To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN
(without highlighting).
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 |
|---|---|
| 20 | */ |
| 21 | function wp_version_check() { |
| 22 | if ( defined('WP_INSTALLING') ) |
| 23 | return; |
| 24 | |
| 25 | global $wp_version, $wpdb, $wp_local_package; |
| 26 | $php_version = phpversion(); |
| 27 | |
| 28 | $current = get_transient( 'update_core' ); |
| 29 | if ( ! is_object($current) ) { |
| 30 | $current = new stdClass; |
| 31 | $current->updates = array(); |
| 32 | $current->version_checked = $wp_version; |
| 33 | } |
| 34 | |
| 35 | $locale = apply_filters( 'core_version_check_locale', get_locale() ); |
| 36 | |
| 37 | // Update last_checked for current to prevent multiple blocking requests if request hangs |
| 38 | $current->last_checked = time(); |
| 39 | set_transient( 'update_core', $current ); |
| 40 | |
| 41 | if ( method_exists( $wpdb, 'db_version' ) ) |
| 42 | $mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version($wpdb->users)); |
| 43 | else |
| 44 | $mysql_version = 'N/A'; |
| 45 | $local_package = isset( $wp_local_package )? $wp_local_package : ''; |
| 46 | $url = "http://api.wordpress.org/core/version-check/1.3/?version=$wp_version&php=$php_version&locale=$locale&mysql=$mysql_version&local_package=$local_package"; |
| 47 | |
| 48 | $options = array( |
| 49 | 'timeout' => 3, |
| 50 | 'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) |