X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/53a5df18dd17a11c18781e78349feb3e139096b4..256a3b381f63716209b3527d0a14442ae570c283:/wp-includes/update.php

diff --git a/wp-includes/update.php b/wp-includes/update.php
index bc666fd2..c670f9d0 100644
--- a/wp-includes/update.php
+++ b/wp-includes/update.php
@@ -18,9 +18,10 @@
  * @uses $wp_version Used to check against the newest WordPress version.
  *
  * @param array $extra_stats Extra statistics to report to the WordPress.org API.
+ * @param bool $force_check Whether to bypass the transient cache and force a fresh update check. Defaults to false, true if $extra_stats is set.
  * @return mixed Returns null if update is unsupported. Returns false if check is too soon.
  */
-function wp_version_check( $extra_stats = array() ) {
+function wp_version_check( $extra_stats = array(), $force_check = false ) {
 	if ( defined('WP_INSTALLING') )
 		return;
 
@@ -31,16 +32,23 @@ function wp_version_check( $extra_stats = array() ) {
 	$current = get_site_transient( 'update_core' );
 	$translations = wp_get_installed_translations( 'core' );
 
+	// Invalidate the transient when $wp_version changes
+	if ( is_object( $current ) && $wp_version != $current->version_checked )
+		$current = false;
+
 	if ( ! is_object($current) ) {
 		$current = new stdClass;
 		$current->updates = array();
 		$current->version_checked = $wp_version;
 	}
 
+	if ( ! empty( $extra_stats ) )
+		$force_check = true;
+
 	// Wait 60 seconds between multiple version check requests
 	$timeout = 60;
 	$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );
-	if ( $time_not_changed && empty( $extra_stats ) )
+	if ( ! $force_check && $time_not_changed )
 		return false;
 
 	$locale = get_locale();
@@ -90,7 +98,7 @@ function wp_version_check( $extra_stats = array() ) {
 		'translations' => json_encode( $translations ),
 	);
 
-	if ( $extra_stats )
+	if ( is_array( $extra_stats ) )
 		$post_body = array_merge( $post_body, $extra_stats );
 
 	$url = $http_url = 'http://api.wordpress.org/core/version-check/1.7/?' . http_build_query( $query, null, '&' );
@@ -452,7 +460,7 @@ function wp_get_translation_updates() {
 	return $updates;
 }
 
-/*
+/**
  * Collect counts and UI strings for available updates
  *
  * @since 3.3.0
@@ -584,6 +592,8 @@ function wp_schedule_update_checks() {
 			$next += 12 * HOUR_IN_SECONDS;
 		}
 		$next = $next - get_option( 'gmt_offset' ) * HOUR_IN_SECONDS;
+		// Add a random number of minutes, so we don't have all sites trying to update exactly on the hour
+		$next = $next + rand( 0, 59 ) * MINUTE_IN_SECONDS;
 		wp_schedule_event( $next, 'twicedaily', 'wp_maybe_auto_update' );
 	}
 }