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the big GMT/local changes, part 1: adding _gmt fields 

git-svn-id: https://develop.svn.wordpress.org/trunk@994 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
michelvaldrighi 2004-03-24 22:53:30 +00:00
parent 5d2898d7ef
commit 9d5f0af661
1 changed files with 37 additions and 36 deletions
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73
wp-admin/upgrade-functions.php
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@ -715,48 +715,49 @@ function upgrade_110() {
$wpdb->query("INSERT INTO $tableoptions (option_name, option_type, option_value, option_admin_level) VALUES ('blog_charset', 3, 'utf-8', 8)");
}
// Convert all datetime fields' values to GMT, add a gmt_offset option
// Get the GMT offset, we'll use that later on
$all_options = get_alloptions();
$time_difference = $all_options->time_difference;
$server_time = time()+date('Z');
$weblogger_time = $server_time + $time_difference*3600;
$gmt_time = time();
$diff_gmt_server = ($gmt_time - $server_time) / 3600;
$diff_weblogger_server = ($weblogger_time - $server_time) / 3600;
$diff_gmt_weblogger = $diff_gmt_server - $diff_weblogger_server;
$gmt_offset = -$diff_gmt_weblogger;
// Add a gmt_offset option, with value $gmt_offset
if (!get_settings('gmt_offset')) {
// echo '1';
$all_options = get_alloptions();
$time_difference = $all_options->time_difference;
$server_time = time()+date('Z');
$weblogger_time = $server_time + $time_difference*3600;
$gmt_time = time();
$diff_gmt_server = ($gmt_time - $server_time) / 3600;
$diff_weblogger_server = ($weblogger_time - $server_time) / 3600;
$diff_gmt_weblogger = $diff_gmt_server - $diff_weblogger_server;
if ($diff_gmt_weblogger != 0) {
//echo '<br>2: ';
$gmt_offset = -$diff_gmt_weblogger;
$add_hours = intval($diff_gmt_weblogger);
$add_minutes = intval(60 * ($diff_gmt_weblogger - $add_hours));
// echo $add_hours.':'.$add_minutes;
// Add or substract time to all dates, to get GMT dates
$wpdb->query("UPDATE $tableposts SET post_date = DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
$wpdb->query("UPDATE $tableposts SET post_modified = DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE) WHERE post_modified != '0000-00-00 00:00:00'");
$wpdb->query("UPDATE $tablecomments SET comment_date = DATE_ADD(comment_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
$wpdb->query("UPDATE $tableusers SET dateYMDhour = DATE_ADD(dateYMDhour, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
} else {
//echo '3';
$gmt_offset = 0;
}
// Add gmt_field option, with value $gmt_offset
if(!$wpdb->get_var("SELECT * FROM $tableoptions WHERE option_name = 'gmt_offset'")) {
// echo "<br>4: $gmt_offset";
$wpdb->query("INSERT INTO $tableoptions (option_id, option_name, option_type, option_value, option_description, option_admin_level) VALUES (94, 'gmt_offset', 8, $gmt_offset, 'The difference in hours between GMT and your timezone', 8)");
}
}
// Add post_date_gmt, post_modified_gmt, comment_date_gmt fields
$got_gmt_fields = 0;
foreach ($wpdb->get_col("DESC $tableposts", 0) as $column ) {
if ($debug) echo("checking $column == $column_name<br />");
if ($column == 'post_date_gmt') {
$got_gmt_fields++;
}
}
if (!$got_gmt_fields) {
$wpdb->query("ALTER TABLE $tableposts ADD post_date_gmt DATETIME NOT NULL AFTER post_date");
$wpdb->query("ALTER TABLE $tableposts ADD post_modified_gmt DATETIME NOT NULL AFTER post_modified");
$wpdb->query("ALTER TABLE $tablecomments ADD comment_date_gmt DATETIME NOT NULL AFTER comment_date");
// Add or substract time to all dates, to get GMT dates
$add_hours = intval($diff_gmt_weblogger);
$add_minutes = intval(60 * ($diff_gmt_weblogger - $add_hours));
$wpdb->query("UPDATE $tableposts SET post_date_gmt = DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
$wpdb->query("UPDATE $tableposts SET post_modified_gmt = DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE) WHERE post_modified != '0000-00-00 00:00:00'");
$wpdb->query("UPDATE $tablecomments SET comment_date_gmt = DATE_ADD(comment_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
$wpdb->query("UPDATE $tableusers SET dateYMDhour = DATE_ADD(dateYMDhour, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)");
}
// post-meta
maybe_create_table($tablepostmeta, "
CREATE TABLE $tablepostmeta (