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Don't update meta data when the new value matches the old value. fixes #13350 

git-svn-id: http://svn.automattic.com/wordpress/trunk@14564 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2010-05-11 17:35:07 +00:00
parent 98b2e56753
commit b2150816f8
1 changed files with 9 additions and 0 deletions
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9
wp-includes/meta.php
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@ -109,6 +109,15 @@ function update_metadata($meta_type, $object_id, $meta_key, $meta_value, $prev_v
if ( ! $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) ) )
return add_metadata($meta_type, $object_id, $meta_key, $meta_value);
// Compare existing value to new value if no prev value given and the key exists only once.
if ( empty($prev_value) ) {
$old_value = get_metadata($meta_type, $object_id, $meta_key);
if ( count($old_value) == 1 ) {
if ( $old_value[0] == $meta_value )
return false;
}
}
$_meta_value = $meta_value;
$meta_value = maybe_serialize( stripslashes_deep($meta_value) );