使用表格的Wordpress更新數據庫

Question

我寫了這個快速腳本，它在移動wordpress博客的位置時更新數據庫。問題： 如果它顯示已更新了多少行，那將是一件好事。這可能嗎？

<?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 } ?> 

Answer 1

您應該使用相關的錶行和數據調用$ wpdb-> update（）。這將返回受影響的行數。

例如

$rows = $wpdb->update( 
    'table', 
    array( 
     'column1' => 'value1', // string 
     'column2' => 'value2' // integer (number) 
    ), 
    array('ID' => 1), 
    array( 
     '%s', // value1 
     '%d' // value2 
    ), 
    array('%d') 
); 

在這裏看到：http://codex.wordpress.org/Class_Reference/wpdb#UPDATE_rows