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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 |
---|---|
34 | $current->version_checked = $wp_version; |
35 | } |
36 |
|
37 | // Wait 60 seconds between multiple version check requests |
38 | $timeout = 60; |
39 | $time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked ); |
40 | if ( $time_not_changed ) |
41 | return false; |
42 |
|
43 | $locale = apply_filters( 'core_version_check_locale', get_locale() ); |
44 |
|
45 | // Update last_checked for current to prevent multiple blocking requests if request hangs |
46 | $current->last_checked = time(); |
47 | set_site_transient( 'update_core', $current ); |
48 |
|
49 | if ( method_exists( $wpdb, 'db_version' ) ) |
50 | $mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version()); |
51 | else |
52 | $mysql_version = 'N/A'; |