I wrote this quick script which updates the database when moving the location of the word press blog. The question: It would be good if it showed how many rows have been updated. Is this possible?
<?php
if(isset($_GET['confirm'])){
// Load Wordpress
require_once('wp-load.php');
// Form variables
$site_was = $_GET['site_was'];
$site_now = $_GET['site_now'];
$db_queries = array(
"UPDATE wp_options SET option_value = replace(option_value, '".$site_was."', '".$site_now."') WHERE option_name = 'home' OR option_name = 'siteurl'",
"UPDATE wp_posts SET guid = REPLACE (guid, '".$site_was."', '".$site_now."')",
"UPDATE wp_posts SET post_content = REPLACE (post_content, '".$site_was."', '".$site_now."')",
"UPDATE wp_posts SET post_content = REPLACE (post_content, 'src=\"".$site_was."', 'src=\"".$site_now."')",
"UPDATE wp_posts SET guid = REPLACE (guid, '".$site_was."', '".$site_now."') WHERE post_type = 'attachment'",
"UPDATE wp_postmeta SET meta_value = REPLACE (meta_value, '".$site_was."','".$site_now."')"
);
foreach ($db_queries as $sql) {
$wpdb->query($sql);
}
} else {
?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="get">
<p>E.g http://examples.com or http://www.example.com/shop</p>
<label>
Site was:
<input type="text" name="site_was" value="<?php if(isset($_GET['site_was'])) echo $_GET['site_was']?>" size="50" />
</label>
<br />
<label>
Site now:
<input type="text" name="site_now" value="<?php if(isset($_GET['site_now'])) echo $_GET['site_now']?>" size="50" />
</label>
<input type="submit" name="confirm" value="Update Datebase" />
</form>
<?php } ?>
You should be calling $wpdb->update() with the relevant table rows and data. That will return the number of affected rows.
eg
$rows = $wpdb->update(
'table',
array(
'column1' => 'value1', // string
'column2' => 'value2' // integer (number)
),
array( 'ID' => 1 ),
array(
'%s', // value1
'%d' // value2
),
array( '%d' )
);
See here: http://codex.wordpress.org/Class_Reference/wpdb#UPDATE_rows
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