Wordpress$wpdb.插入多条记录

好吧，我想通了！

设置实际值数组和占位符

$values = array();
$place_holders = array();

初始查询：

$query = "INSERT INTO orders (order_id, product_id, quantity) VALUES ";

然后循环浏览您要添加的值，并将它们插入到适当的数组中：

foreach ( $_POST as $key => $value ) {
     array_push( $values, $value, $order_id );
     $place_holders[] = "('%d', '%d')" /* In my case, i know they will always be integers */
}

然后将这些位添加到初始查询中：

$query .= implode( ', ', $place_holders );
$wpdb->query( $wpdb->prepare( "$query ", $values ) );

您也可以使用这种方式来构建查询：

$values = array();
// We're preparing each DB item on it's own. Makes the code cleaner.
foreach ( $items as $key => $value ) {
    $values[] = $wpdb->prepare( "(%d,%d)", $key, $value );
}
$query = "INSERT INTO orders (order_id, product_id, quantity) VALUES ";
$query .= implode( ",'n", $values );

我遇到了这个问题，并决定通过使用公认的答案来构建一个更改进的函数：

/**
 * A method for inserting multiple rows into the specified table
 * 
 *  Usage Example: 
 *
 *  $insert_arrays = array();
 *  foreach($assets as $asset) {
 *
 *  $insert_arrays[] = array(
 *  'type' => "multiple_row_insert",
 *  'status' => 1,
 *  'name'=>$asset,
 *  'added_date' => current_time( 'mysql' ),
 *  'last_update' => current_time( 'mysql' ));
 *
 *  }
 *
 *  wp_insert_rows($insert_arrays);
 *
 *
 * @param array $row_arrays
 * @param string $wp_table_name
 * @return false|int
 *
 * @author  Ugur Mirza ZEYREK
 * @source http://stackoverflow.com/a/12374838/1194797
 */
function wp_insert_rows($row_arrays = array(), $wp_table_name) {
    global $wpdb;
    $wp_table_name = esc_sql($wp_table_name);
    // Setup arrays for Actual Values, and Placeholders
    $values = array();
    $place_holders = array();
    $query = "";
    $query_columns = "";
    $query .= "INSERT INTO {$wp_table_name} (";
            foreach($row_arrays as $count => $row_array)
            {
                foreach($row_array as $key => $value) {
                    if($count == 0) {
                        if($query_columns) {
                        $query_columns .= ",".$key."";
                        } else {
                        $query_columns .= "".$key."";
                        }
                    }
                    $values[] =  $value;
                    if(is_numeric($value)) {
                        if(isset($place_holders[$count])) {
                        $place_holders[$count] .= ", '%d'";
                        } else {
                        $place_holders[$count] .= "( '%d'";
                        }
                    } else {
                        if(isset($place_holders[$count])) {
                        $place_holders[$count] .= ", '%s'";
                        } else {
                        $place_holders[$count] .= "( '%s'";
                        }
                    }
                }
                        // mind closing the GAP
                        $place_holders[$count] .= ")";
            }
    $query .= " $query_columns ) VALUES ";
    $query .= implode(', ', $place_holders);
    if($wpdb->query($wpdb->prepare($query, $values))){
        return true;
    } else {
        return false;
    }
}

来源：https://github.com/mirzazeyrek/wp-multiple-insert

除了使用$wpdb插入多行之外，如果您需要更新现有行，下面的代码片段应该会有所帮助。这是上面@philipp提供的更新片段。

$values = array();
// We're preparing each DB item on it's own. Makes the code cleaner.
foreach ( $items as $key => $value ) {
    $values[] = $wpdb->prepare( "(%d,%d)", $key, $value );
}
$values = implode( ",'n", $values );
$query = "INSERT INTO orders (order_id, product_id, quantity) VALUES {$values} ON DUPLICATE KEY UPDATE `quantity` = VALUES(quantity)";

这有点晚了，但你也可以这样做。

    global $wpdb;
    $table_name = $wpdb->prefix . 'your_table';
    foreach ($your_array as $key => $value) {
          $result = $wpdb->insert( 
            $table_name, 
            array( 
              'colname_1' => $value[0], 
              'colname_2' => $value[1], 
              'colname_3' => $value[2], 
            ) 
          );
        }
  if (!$result) {
    print 'There was a error';
  }

不是很好，但如果你知道自己在做什么：

require_once('wp-load.php');
mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);  
@mysql_select_db(DB_NAME) or die();
mysql_query("INSERT into TABLE ('column1', 'column2', 'column3') VALUES 
                               ('value1', 'value2', 'value3'), 
                               ('otherval1', 'otherval2', 'otherval3'),
                               ('anotherval1', 'anotherval2', 'anotherval3)");