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<title>[20287] trunk: Introduce $wpdb->delete().</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/20287">20287</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2012-03-24 15:24:31 +0000 (Sat, 24 Mar 2012)</dd>
</dl>
<h3>Log Message</h3>
<pre>Introduce $wpdb->delete(). props justindgivens, scribu. fixes <a href="http://core.trac.wordpress.org/ticket/18948">#18948</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminincludesbookmarkphp">trunk/wp-admin/includes/bookmark.php</a></li>
<li><a href="#trunkwpadminincludesmsphp">trunk/wp-admin/includes/ms.php</a></li>
<li><a href="#trunkwpadminincludesupgradephp">trunk/wp-admin/includes/upgrade.php</a></li>
<li><a href="#trunkwpadminincludesuserphp">trunk/wp-admin/includes/user.php</a></li>
<li><a href="#trunkwpincludescommentphp">trunk/wp-includes/comment.php</a></li>
<li><a href="#trunkwpincludesmetaphp">trunk/wp-includes/meta.php</a></li>
<li><a href="#trunkwpincludesmsfunctionsphp">trunk/wp-includes/ms-functions.php</a></li>
<li><a href="#trunkwpincludesoptionphp">trunk/wp-includes/option.php</a></li>
<li><a href="#trunkwpincludespostphp">trunk/wp-includes/post.php</a></li>
<li><a href="#trunkwpincludestaxonomyphp">trunk/wp-includes/taxonomy.php</a></li>
<li><a href="#trunkwpincludeswpdbphp">trunk/wp-includes/wp-db.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpadminincludesbookmarkphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/bookmark.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/bookmark.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-admin/includes/bookmark.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -84,7 +84,7 @@
</span><span class="cx">
</span><span class="cx"> wp_delete_object_term_relationships( $link_id, 'link_category' );
</span><span class="cx">
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->links WHERE link_id = %d", $link_id ) );
</del><ins>+ $wpdb->delete( $wpdb->links, array( 'link_id' => $link_id ) );
</ins><span class="cx">
</span><span class="cx"> do_action( 'deleted_link', $link_id );
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpadminincludesmsphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/ms.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/ms.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-admin/includes/ms.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -89,7 +89,8 @@
</span><span class="cx"> $wpdb->query( "DROP TABLE IF EXISTS `$table`" );
</span><span class="cx"> }
</span><span class="cx">
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->blogs WHERE blog_id = %d", $blog_id ) );
</del><ins>+ $wpdb->delete( $wpdb->blogs, array( 'blog_id' => $blog_id ) );
+
</ins><span class="cx"> $dir = apply_filters( 'wpmu_delete_blog_upload_dir', WP_CONTENT_DIR . "/blogs.dir/{$blog_id}/files/", $blog_id );
</span><span class="cx"> $dir = rtrim( $dir, DIRECTORY_SEPARATOR );
</span><span class="cx"> $top_dir = $dir;
</span><span class="lines">@@ -158,8 +159,8 @@
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->users WHERE ID = %d", $id ) );
- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->usermeta WHERE user_id = %d", $id ) );
</del><ins>+ $wpdb->delete( $wpdb->users, array( 'ID' => $id ) );
+ $wpdb->delete( $wpdb->usermeta, array( 'user_id' => $id ) );
</ins><span class="cx">
</span><span class="cx"> clean_user_cache( $id );
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpadminincludesupgradephp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/upgrade.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/upgrade.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-admin/includes/upgrade.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -300,7 +300,7 @@
</span><span class="cx">
</span><span class="cx"> // Delete any caps that snuck into the previously active blog. (Hardcoded to blog 1 for now.) TODO: Get previous_blog_id.
</span><span class="cx"> if ( !is_super_admin( $user_id ) && $user_id != 1 )
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $wpdb->base_prefix.'1_capabilities') );
</del><ins>+ $wpdb->delete( $wpdb->usermeta, array( 'user_id' => $user_id , 'meta_key' => $wpdb->base_prefix.'1_capabilities' ) );
</ins><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx"> endif;
</span></span></pre></div>
<a id="trunkwpadminincludesuserphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/user.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/user.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-admin/includes/user.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -266,11 +266,11 @@
</span><span class="cx">
</span><span class="cx"> // FINALLY, delete user
</span><span class="cx"> if ( !is_multisite() ) {
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d", $id) );
- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->users WHERE ID = %d", $id) );
</del><ins>+ $wpdb->delete( $wpdb->usermeta, array( 'user_id' => $id ) );
+ $wpdb->delete( $wpdb->users, array( 'ID' => $id ) );
</ins><span class="cx"> } else {
</span><span class="cx"> $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
</span><del>- $wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = $id AND meta_key = '{$level_key}'");
</del><ins>+ $wpdb->delete( $wpdb->usermeta, array( 'user_id' => $id , 'meta_key' => $level_key ) );
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> // allow for commit transaction
</span></span></pre></div>
<a id="trunkwpincludescommentphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/comment.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/comment.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/comment.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -988,7 +988,7 @@
</span><span class="cx"> do_action( 'deleted_commentmeta', $meta_ids );
</span><span class="cx"> }
</span><span class="cx">
</span><del>- if ( ! $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->comments WHERE comment_ID = %d LIMIT 1", $comment_id) ) )
</del><ins>+ if ( ! $wpdb->delete( $wpdb->comments, array( 'comment_ID' => $comment_id ) ) )
</ins><span class="cx"> return false;
</span><span class="cx"> do_action('deleted_comment', $comment_id);
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpincludesmetaphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/meta.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/meta.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/meta.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -489,7 +489,7 @@
</span><span class="cx"> do_action( 'delete_postmeta', $meta_id );
</span><span class="cx">
</span><span class="cx"> // Run the query, will return true if deleted, false otherwise
</span><del>- $result = (bool) $wpdb->query( $wpdb->prepare( "DELETE FROM $table WHERE $id_column = %d LIMIT 1;", $meta_id ) );
</del><ins>+ $result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) );
</ins><span class="cx">
</span><span class="cx"> // Clear the caches.
</span><span class="cx"> wp_cache_delete($object_id, $meta_type . '_meta');
</span></span></pre></div>
<a id="trunkwpincludesmsfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/ms-functions.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/ms-functions.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/ms-functions.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -496,7 +496,7 @@
</span><span class="cx"> $diff = $now - $registered_at;
</span><span class="cx"> // If registered more than two days ago, cancel registration and let this signup go through.
</span><span class="cx"> if ( $diff > 172800 )
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE user_login = %s", $user_name) );
</del><ins>+ $wpdb->delete( $wpdb->signups, array( 'user_login' => $user_name ) );
</ins><span class="cx"> else
</span><span class="cx"> $errors->add('user_name', __('That username is currently reserved but may be available in a couple of days.'));
</span><span class="cx">
</span><span class="lines">@@ -509,7 +509,7 @@
</span><span class="cx"> $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
</span><span class="cx"> // If registered more than two days ago, cancel registration and let this signup go through.
</span><span class="cx"> if ( $diff > 172800 )
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE user_email = %s", $user_email) );
</del><ins>+ $wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) );
</ins><span class="cx"> else
</span><span class="cx"> $errors->add('user_email', __('That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing.'));
</span><span class="cx"> }
</span><span class="lines">@@ -612,7 +612,7 @@
</span><span class="cx"> $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
</span><span class="cx"> // If registered more than two days ago, cancel registration and let this signup go through.
</span><span class="cx"> if ( $diff > 172800 )
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) );
</del><ins>+ $wpdb->delete( $wpdb->signups, array( 'domain' => $mydomain , 'path' => $path ) );
</ins><span class="cx"> else
</span><span class="cx"> $errors->add('blogname', __('That site is currently reserved but may be available in a couple days.'));
</span><span class="cx"> }
</span><span class="lines">@@ -1160,9 +1160,10 @@
</span><span class="cx"> $wpdb->update( $wpdb->options, array('option_value' => ''), array('option_name' => 'admin_email') );
</span><span class="cx">
</span><span class="cx"> // remove all perms
</span><del>- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE meta_key = %s", $table_prefix.'user_level') );
- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE meta_key = %s", $table_prefix.'capabilities') );
</del><ins>+ $wpdb->delete( $wpdb->usermeta, array( 'meta_key' => $table_prefix.'user_level' ) );
</ins><span class="cx">
</span><ins>+ $wpdb->delete( $wpdb->usermeta, array( 'meta_key' => $table_prefix.'capabilities' ) );
+
</ins><span class="cx"> $wpdb->suppress_errors( false );
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpincludesoptionphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/option.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/option.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/option.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -367,7 +367,7 @@
</span><span class="cx"> if ( is_null( $row ) )
</span><span class="cx"> return false;
</span><span class="cx"> do_action( 'delete_option', $option );
</span><del>- $result = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->options WHERE option_name = %s", $option) );
</del><ins>+ $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) );
</ins><span class="cx"> if ( ! defined( 'WP_INSTALLING' ) ) {
</span><span class="cx"> if ( 'yes' == $row->autoload ) {
</span><span class="cx"> $alloptions = wp_load_alloptions();
</span><span class="lines">@@ -857,7 +857,7 @@
</span><span class="cx"> $cache_key = "{$wpdb->siteid}:$option";
</span><span class="cx"> wp_cache_delete( $cache_key, 'site-options' );
</span><span class="cx">
</span><del>- $result = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) );
</del><ins>+ $result = $wpdb->delete( $wpdb->sitemeta, array( 'meta_key' => $option, 'site_id' => $wpdb->siteid ) );
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> if ( $result ) {
</span></span></pre></div>
<a id="trunkwpincludespostphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/post.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/post.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/post.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -2053,7 +2053,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> do_action( 'delete_post', $postid );
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $postid ));
</del><ins>+ $wpdb->delete( $wpdb->posts, array( 'ID' => $postid ) );
</ins><span class="cx"> do_action( 'deleted_post', $postid );
</span><span class="cx">
</span><span class="cx"> if ( 'page' == $post->post_type ) {
</span><span class="lines">@@ -3810,7 +3810,7 @@
</span><span class="cx"> wp_delete_object_term_relationships($post_id, array('category', 'post_tag'));
</span><span class="cx"> wp_delete_object_term_relationships($post_id, get_object_taxonomies($post->post_type));
</span><span class="cx">
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND meta_value = %d", $post_id ));
</del><ins>+ $wpdb->delete( $wpdb->postmeta, array( 'meta_key' => '_thumbnail_id' , 'meta_value' => $post_id ) );
</ins><span class="cx">
</span><span class="cx"> $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ));
</span><span class="cx"> if ( ! empty( $comment_ids ) ) {
</span><span class="lines">@@ -3829,7 +3829,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> do_action( 'delete_post', $post_id );
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $post_id ));
</del><ins>+ $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
</ins><span class="cx"> do_action( 'deleted_post', $post_id );
</span><span class="cx">
</span><span class="cx"> $uploadpath = wp_upload_dir();
</span></span></pre></div>
<a id="trunkwpincludestaxonomyphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/taxonomy.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/taxonomy.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/taxonomy.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -1802,12 +1802,12 @@
</span><span class="cx"> clean_object_term_cache( $objects, $object_type );
</span><span class="cx">
</span><span class="cx"> do_action( 'delete_term_taxonomy', $tt_id );
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $tt_id ) );
</del><ins>+ $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) );
</ins><span class="cx"> do_action( 'deleted_term_taxonomy', $tt_id );
</span><span class="cx">
</span><span class="cx"> // Delete the term if no taxonomies use it.
</span><span class="cx"> if ( !$wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term) ) )
</span><del>- $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->terms WHERE term_id = %d", $term) );
</del><ins>+ $wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) );
</ins><span class="cx">
</span><span class="cx"> clean_term_cache($term, $taxonomy);
</span><span class="cx">
</span></span></pre></div>
<a id="trunkwpincludeswpdbphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/wp-db.php (20286 => 20287)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/wp-db.php 2012-03-24 14:07:12 UTC (rev 20286)
+++ trunk/wp-includes/wp-db.php 2012-03-24 15:24:31 UTC (rev 20287)
</span><span class="lines">@@ -404,9 +404,10 @@
</span><span class="cx"> * Keys are column names, values are format types: 'ID' => '%d'
</span><span class="cx"> *
</span><span class="cx"> * @since 2.8.0
</span><del>- * @see wpdb:prepare()
- * @see wpdb:insert()
- * @see wpdb:update()
</del><ins>+ * @see wpdb::prepare()
+ * @see wpdb::insert()
+ * @see wpdb::update()
+ * @see wpdb::delete()
</ins><span class="cx"> * @see wp_set_wpdb_vars()
</span><span class="cx"> * @access public
</span><span class="cx"> * @var array
</span><span class="lines">@@ -1272,6 +1273,50 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> /**
</span><ins>+ * Delete a row in the table
+ *
+ * <code>
+ * wpdb::delete( 'table', array( 'ID' => 1 ) )
+ * wpdb::delete( 'table', array( 'ID' => 1 ), array( '%d' ) )
+ * wpdb::delete( 'table', array( 'ID' => 1 ), array( '%d' ), 1 )
+ * </code>
+ *
+ * @since 2.5.0
+ * @see wpdb::prepare()
+ * @see wpdb::$field_types
+ * @see wp_set_wpdb_vars()
+ *
+ * @param string $table table name
+ * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
+ * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * @return int|false The number of rows updated, or false on error.
+ */
+ function delete( $table, $where, $where_format = null ) {
+ if ( ! is_array( $where ) )
+ return false;
+
+ $bits = $wheres = array();
+
+ $where_formats = $where_format = (array) $where_format;
+
+ foreach ( array_keys( $where ) as $field ) {
+ if ( !empty( $where_format ) ) {
+ $form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0];
+ } elseif ( isset( $this->field_types[ $field ] ) ) {
+ $form = $this->field_types[ $field ];
+ } else {
+ $form = '%s';
+ }
+
+ $wheres[] = "$field = $form";
+ }
+
+ $sql = "DELETE FROM $table WHERE " . implode( ' AND ', $wheres );
+ return $this->query( $this->prepare( $sql, $where ) );
+ }
+
+
+ /**
</ins><span class="cx"> * Retrieve one variable from the database.
</span><span class="cx"> *
</span><span class="cx"> * Executes a SQL query and returns the value from the SQL result.
</span></span></pre>
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